Process for producing para-substituted aryl compound
Technical Field
The invention relates to a preparation method of a para-substituted aryl compound.
Background
Para-substituted aryl compounds are widely found in natural products, active drug molecules, and pesticides. For example: losartan is an antihypertensive drug; canagliflozin which is useful in the treatment of diabetes; celecoxib can be used for treating arthritis. These active molecules all contain a diaryl structure. Thus, it is of great interest to develop simple and efficient methods for constructing diaryl compounds.
The traditional arylation cross-coupling reaction needs to introduce active halogen or organic metal compound into a reaction site in advance, and compared with the prior art, the method for realizing the arylation reaction directly from a C-H bond is the most attractive and promising method. One of the great obstacles to the direct arylation of simple aromatics is the precise control of site selectivity without a directing group during the functionalization of the C-H bond, especially when there are multiple reactive sites with subtle spatial and electrical differences. The para-arylation reaction of mono-substituted aromatics remains a significant challenge.
Yu group of subjects (Yu, j.q.et al.j.am. chem.soc.2011,133,13864) and Cheng group of subjects (Cheng, c. — h.et al.angelw.chem., int.ed.2011,50,9880) reported in 2011 respectively a Pd-catalyzed para-arylation reaction of mono-substituted aromatic hydrocarbons (alkylbenzenes, halobenzenes, and alkoxybenzenes), which are highly likely to undergo Pd (iv) intermediates. Subsequently, the Ye topic group (Ye, m.et al.j.am.chem.soc.2017,139,1786) reported in 2017 ligand-controlled Pd-catalyzed cross-coupling of mono-substituted arenes with aryl boronic acids.
For both types of reactions, the mono-substituted aromatic hydrocarbon is in large excess, which also indicates that the mono-substituted aromatic hydrocarbon has low reactivity and is not suitable for late functionalization of complex substrates; meanwhile, the substrate type is single, and the method is only suitable for common alkyl benzene and halogenated aromatic hydrocarbon. On the other hand, the existing methods have poor tolerance to heterocyclic coupling substrates. Therefore, a method beneficial to para-selective substitution of mono-substituted aromatic hydrocarbon is urgently needed to be found, and the conditions of mild conditions, high substrate universality and wide tolerance of heterocyclic coupling substrates are met.
Disclosure of Invention
Aiming at the defects of single substrate type and poor tolerance to heterocyclic coupling substrates in the method for preparing the para-substituted aryl compound by para-selective substitution of mono-substituted aromatic hydrocarbon in the prior art, the method for preparing the para-substituted aryl compound takes the mono-substituted aromatic hydrocarbon as the substrate, aryl sulfonium salt is built in situ, palladium catalyst catalyzes the aryl sulfonium salt built in situ to generate Suzuki-Miyaura coupling reaction, and the para-arylation or alkenylation product of the mono-substituted aromatic hydrocarbon is quickly and efficiently built. The method has the advantages of mild conditions, high substrate universality and wide tolerance of the heterocyclic coupling substrate.
The invention provides a preparation method of a para-substituted aryl compound shown as a formula (I), which comprises the following steps:
under the action of alkali and a palladium catalyst in a solvent in an inert atmosphere, performing coupling reaction on aryl sulfonium salt shown as a formula (II) and boride shown as a formula (III);
wherein,
x is O or S;
y is OTf, TFA or BF4;
R is amino, hydroxyl, halogen, 3-7 membered heterocycloalkyl containing 1 or 2 heteroatoms selected from O, S and N, 4-6 membered cycloalkyl, -COOR
4、-OR
5C1-C10 alkyl, R
ASubstituted C1-C10 alkyl, C1-C10 alkoxy, R
BSubstituted C1-C10 alkoxy, C6-C10 aryl, R
CSubstituted C6-C10 aryl, benzyl, R
DA substituted benzyl group,
R4Is H or C1-C3 alkyl;
R
5is C6-C10 aryl, R
5ASubstituted C6-C10 aryl or acetyl; r
5AIs halogen, amino, nitro, C1-C3 alkyl, C1-C3 alkoxy, -NHMs or
RAIs halogen, acetoxy (OAc), C1-C3 alkoxy, -NPhth, -COOR6Or "3-7 membered heterocycloalkyl containing 1 or 2 heteroatoms, which is one or more of O, S and N"; r6Is H or C1-C3 alkyl;
RBis halogen, carboxyl, C6-C10 aryl or "3-7 membered heterocycloalkyl containing 1 or 2 heteroatoms, which is one or more of O, S and N";
RCand RDIndependently halogen, carboxy-substituted C1-C3 alkyl, C1-C3 alkyl, or C1-C3 alkoxy;
R1and R2Independently H OR C1-C10 alkyl, OR1And OR2Together with the boron atom to which they are both attached form a 5-6 membered heterocycloalkyl or a C1-C3 alkyl substituted 5-6 membered heterocycloalkyl;
R
3is C6-C10 aryl, R
FSubstituted C6-C10 aryl, 5-12 membered heteroaryl containing 1-4 heteroatoms, wherein the heteroatoms are one or more of O, S and N, and R
GSubstituted 5-12 membered heteroaryl having 1-4 heteroatoms of one or more of O, S and N or
RFAnd RGIndependently halogen, amino, nitro, hydroxy, TMS, acetyl, -SR10、-COOR11C1-C6 alkyl, halogen-substituted C1-C6 alkyl, C1-C6 alkoxy, halogen-substituted C1-C6 alkoxy or C6-C10 aryl; r10Is C1-C3 alkyl; r11Is H or C1-C3 alkyl;
R7、R8and R9Is defined as any one of the following (i) to (iii):
(i)R7、R8and R9Independently H, C1-C10 alkyl, halogen substituted C1-C10 alkyl, C1-C10 alkoxy, C6-C10 aryl, RESubstituted C6-C10 aryl, 5-12 membered heteroaryl containing 1-4 heteroatoms, which are one or more of O, S and N, or-COOR12,R12Is C1-C3 alkyl; rEIs halogen, acetoxy (OAc), C1-C3 alkyl, halogen substituted C1-C3 alkyl, C1-C3 alkoxy, halogen substituted C1-C3 alkoxy, -NPhth or-COOR13,R13Is C1-C3 alkyl;
(ii)R7is H, R8And R9Together with the carbon atoms to which they are commonly attached form a 4-6 membered cycloalkyl group;
(iii)R
7、R
8and a carbon-carbon double bond connected with the N-carbon double bond to form '5-7-membered heterocyclic alkenyl containing 1-2 heteroatoms, wherein the heteroatoms are one or more of O, S and N', and R
7ASubstituted' containing 1 ℃2 heteroatoms selected from O, S and one or more of N, 5-7 membered heterocycloalkenyl, 5-7 membered cycloalkylenyl or
R
9Is H; r
7AIs C1-C3 alkyl or tert-butyloxycarbonyl (Boc).
In a certain embodiment, X is S.
Preferably, in R, the halogen is F, Cl, Br or I, such as F or Cl.
Preferably, in R, the "3-7 membered heterocycloalkyl group containing 1 or 2 heteroatoms of one or more of O, S and N" is "a 3-6 membered heterocycloalkyl group containing 1 or 2 heteroatoms of O and/or N", such as an oxirane group (e.g., ethylene oxide group)
) Tetrahydrofuranyl, tetrahydropyranyl (e.g. of the formula
) Or morpholinyl (e.g.
)。
Preferably, in R, the 4-6 membered cycloalkyl is a 5-6 membered cycloalkyl, such as cyclopentyl or cyclohexyl.
Preferably, R4Wherein said C1-C3 alkyl is methyl, ethyl, n-propyl or isopropyl;
preferably, R5The C6-C10 aryl group and the R5AThe C6-C10 aryl group of the substituted C6-C10 aryl groups is independently phenyl or naphthyl.
Preferably, R5AWherein the halogen is F, Cl, Br or I.
Preferably, R5AWherein the C1-C3 alkyl is methyl, ethyl, n-propyl or isopropyl.
Preferably, R5AWherein the C1-C3 alkoxy is methoxy, ethoxy, n-propoxy or isopropoxy.
Preferably, R is5AR in substituted C6-C10 aryl5AThe number of substitution(s) may be 1 to 3 (e.g., 1 or 2), each R5AThe same or different.
In a certain embodiment, R
5AIs halogen, nitro, -NHMs or
Preferably, in R, the C1-C10 alkyl group and the RAThe C1-C10 alkyl group of the substituted C1-C10 alkyl groups is independently a C1-C6 alkyl group, such as a C1-C3 alkyl group, further such as methyl, ethyl, n-propyl or isopropyl.
Preferably, RAWherein the halogen is F, Cl, Br or I.
Preferably, RAWherein the C1-C3 alkoxy is methoxy, ethoxy, n-propoxy or isopropoxy.
Preferably, R6Wherein the C1-C3 alkyl is methyl, ethyl, n-propyl or isopropyl.
Preferably, R
AThe "3-7 membered heterocycloalkyl group containing 1 or 2 hetero atoms and one or more of O, S and N" is "a 3-6 membered heterocycloalkyl group containing 1 or 2 hetero atoms and hetero atoms of O and/or N", for example, an oxirane group (e.g., an ethylene oxide group)
) Tetrahydrofuranyl, tetrahydropyranyl (e.g. of the formula
) Or morpholinyl (e.g.
)。
In a certain embodiment, RAIs halogen, acetoxy, C1-C3 alkoxy, -NPhth or-COOR6。
Preferably, in R, the C1-C10 alkoxy group and the RBThe C1-C10 alkoxy group of the substituted C1-C10 alkoxy groups is independently C1-C6 alkoxy, for example C1-C3 alkoxy, further for example methoxy, ethoxy, n-propoxy or isopropoxy.
Preferably, RBWherein the halogen is F, Cl, Br or I.
Preferably, RBWherein said C6-C10 aryl is phenyl or naphthyl, such as phenyl.
Preferably, R
BThe "3-7 membered heterocycloalkyl group containing 1 or 2 hetero atoms and one or more of O, S and N" is "a 3-6 membered heterocycloalkyl group containing 1 or 2 hetero atoms and hetero atoms of O and/or N", for example, an oxirane group (e.g., an ethylene oxide group)
) Tetrahydrofuranyl, tetrahydropyranyl (e.g. of the formula
) Or morpholinyl (e.g.
)。
In a certain embodiment, RBIs halogen or "3-6 membered heterocycloalkyl containing 1 or 2 heteroatoms, which are O and/or N".
Preferably, in R, the C6-C10 aryl group and the RCThe C6-C10 aryl group of the substituted C6-C10 aryl groups is independently phenyl or naphthyl.
Preferably, in R, R isCR in substituted C6-C10 arylCThe number of substitution(s) may be 1 to 3 (e.g., 1 or 2), each RCThe same or different.
Preferably, in R, R isDR in substituted benzylDThe number of substitution(s) may be 1 to 3 (e.g., 1 or 2), each RDThe same or different.
Preferably, RCOr RDWherein the halogen is F, Cl, Br or I.
Preferably, RCOr RDWherein the C1-C3 alkyl group of the C1-C3 alkyl group and the C1-C3 alkyl group which are substituted by carboxyl are independentOr methyl, ethyl, n-propyl or isopropyl.
Preferably, RCOr RDIn the carboxyl-substituted C1-C3 alkyl group, the number of substitution of carboxyl groups may be 1 to 2 (for example, 1).
Preferably, RCOr RDWherein the C1-C3 alkoxy is methoxy, ethoxy, n-propoxy or isopropoxy.
In a certain embodiment, R is halogen, C1-C10 alkyl, R
ASubstituted C1-C10 alkyl, C1-C10 alkoxy, R
BSubstituted C1-C10 alkoxy, 3-6 membered heterocycloalkyl having 1 or 2 heteroatoms, O and/or N, 5-6 membered cycloalkyl, -COOR
4、-OR
5C6-C10 aryl, R
CSubstituted C6-C10 aryl, benzyl,
Preferably, R1Or R2The C1-C10 alkyl group is a C1-C6 alkyl group, such as a C1-C3 alkyl group, and further such as a methyl group, an ethyl group, an n-propyl group or an isopropyl group.
Preferably, when OR
1And OR
2When they form a 5-to 6-membered heterocycloalkyl group or a C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group together with a boron atom to which they are both bonded, the 5-to 6-membered heterocycloalkyl group in the 5-to 6-membered heterocycloalkyl group and the 5-to 6-membered heterocycloalkyl group is
Preferably, the number of C1-C3 alkyl groups substituted in the C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group may be 2 to 6 (e.g., 4).
Preferably, the C1-C3 alkyl group of the C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group is a methyl group, an ethyl group, an n-propyl group or an isopropyl group, such as a methyl group.
Preferably, the C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group is
In a certain embodiment, R
1And R
2Is H, OR OR
1And OR
2Together with the boron atom to which they are both attached form a C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group (e.g.
)。
Preferably, R3The C6-C10 aryl group and the RFThe C6-C10 aryl group of the substituted C6-C10 aryl group is phenyl or naphthyl.
Preferably, R3In (1), the RFR in substituted C6-C10 arylFThe number of substitution(s) may be 1 to 5 (e.g., 1, 2, 3, 4 or 5), each RFThe same or different.
Preferably, R
3Wherein the "5-12 membered heteroaryl group containing 1 to 4 hetero atoms and one or more of O, S hetero atoms and N" and R
GThe "5-12 membered heteroaryl group containing 1 to 4 hetero atoms and one or more hetero atoms of O, S and N" in the substituted "5-12 membered heteroaryl group containing 1 to 4 hetero atoms and one or more hetero atoms of O, S and N" is independently "5-10 membered heteroaryl group containing 1 to 2 hetero atoms and one or more hetero atoms of O, S and N", for example, furyl group (e.g., furyl group)
) Pyridyl (e.g. pyridine)
) Thienyl (e.g.
) Benzothienyl (e.g. benzothienyl)
) Benzofuranyl radicals (e.g. benzofuranyl)
) Or quinolyl (e.g. quinolyl)
)。
Preferably, R3In (1), the RGR in substituted 5-12 membered heteroaryl containing 1-4 heteroatoms of one or more of O, S and NGThe number of substitution(s) may be 1 to 3 (e.g., 1 or 2), each RGThe same or different.
Preferably, RFOr RGWherein the halogen in the halogen, the halogen substituted C1-C6 alkyl group, and the halogen substituted C1-C6 alkoxy group is independently F, Cl, Br, or I.
Preferably, RFOr RGWherein the C1-C6 alkyl of the C1-C6 alkyl and the halogen substituted C1-C6 alkyl is independently C1-C3 alkyl, such as methyl, ethyl, n-propyl or isopropyl.
Preferably, RFOr RGThe number of halogen substitution in the halogen-substituted C1-C6 alkyl group may be 1 to 6 (e.g., 3).
Preferably, RFOr RGWherein said halogen substituted C1-C6 alkyl is-CF3。
Preferably, RFOr RGWherein the C1-C6 alkoxy of the C1-C6 alkoxy and the halogen substituted C1-C6 alkoxy is independently C1-C3 alkoxy, such as methoxy, ethoxy, n-propoxy, or isopropoxy.
Preferably, RFOr RGThe number of halogen substituted in the halogen-substituted C1-C6 alkoxy group may be 1 to 6 (e.g., 3).
Preferably, RFOr RGWherein said halogen-substituted C1-C6 alkoxy group is-OCF3。
Preferably, RFOr RGWherein, the C6-C10 aryl is phenyl or naphthyl.
In a certain embodiment, RFIs halogen, nitro, TMS, acetyl, -SR10、-COOR11C1-C6 alkyl, halogen substituted C1-C6 alkyl, C1-C6 alkoxy, halogen substituted C1-C6 alkoxy or C6-C10 aryl.
In a certain embodiment, RGIs halogen.
Preferably, R10Or R11Wherein the C1-C3 alkyl group is methyl, ethyl, n-propyl or isopropyl (e.g., methyl or ethyl).
Preferably, R7、R8Or R9Wherein the halogen in the halogen substituted C1-C6 alkyl is F, Cl, Br or I.
Preferably, R7、R8Or R9Wherein C1-C10 alkyl of said C1-C10 alkyl and said halogen substituted C1-C10 alkyl is independently C1-C6 alkyl, such as C1-C3 alkyl, further such as methyl, ethyl, n-propyl or isopropyl.
Preferably, R7、R8Or R9The number of halogen substitution in the halogen-substituted C1-C10 alkyl group may be 1 to 6 (e.g., 3).
Preferably, R7、R8Or R9Wherein said halogen substituted C1-C10 alkyl is-CF3。
Preferably, R7、R8Or R9The C1-C10 alkoxy group is a C1-C6 alkoxy group, such as a C1-C3 alkoxy group, further such as a methoxy group, an ethoxy group, an n-propoxy group or an isopropoxy group.
Preferably, R7、R8Or R9The C6-C10 aryl group and the REThe C6-C10 aryl group of the substituted C6-C10 aryl group is phenyl or naphthyl.
Preferably, R
7、R
8Or R
9Wherein the "5-12 membered heteroaryl group containing 1 to 4 hetero atoms and one or more of O, S and N" is a "5-10 membered heteroaryl group containing 1 to 2 hetero atoms and one or more of O, S and N", such as furyl (e.g., furyl)
) Pyridyl (e.g. pyridine)
) Thienyl (e.g.
) And the like.
Preferably, REWherein the halogen in the halogen, the halogen substituted C1-C3 alkyl group, and the halogen substituted C1-C3 alkoxy group is independently F, Cl, Br, or I.
Preferably, REWherein the C1-C3 alkyl of the C1-C3 alkyl and the halogen substituted C1-C3 alkyl is independently methyl, ethyl, n-propyl or isopropyl.
Preferably, REThe number of halogen substitution in the halogen-substituted C1-C3 alkyl group may be 1 to 6 (e.g., 3).
Preferably, REWherein said halogen substituted C1-C3 alkyl is-CF3。
Preferably, REWherein the C1-C3 alkoxy of the C1-C3 alkoxy and the halogen substituted C1-C3 alkoxy is independently methoxy, ethoxy, n-propoxy or isopropoxy.
Preferably, REThe number of halogen substituted in the halogen-substituted C1-C3 alkoxy group may be 1 to 6 (e.g., 3).
Preferably, REWherein said halogen-substituted C1-C3 alkoxy group is-OCF3。
Preferably, R7、R8Or R9In (1), the RESubstituted C6-C10 aryl is halogen substituted C6-C10 aryl, for example halogen substituted phenyl.
Preferably, R12Or R13Wherein said C1-C3 alkyl is methyl, ethyl, n-propyl or isopropyl, such as methyl or ethyl.
In one embodiment, when R7、R8And R9Is defined as when in (i), R7、R8And R9Independently H, C1-C10 alkyl, C6-C10 aryl, RESubstituted C6-C10 aryl, 5-10 membered heteroaryl containing 1-2 heteroatoms, wherein the heteroatoms are one or more of O, S and N, or-COOR12And R is7、R8And R9Not H at the same time.
In one embodiment, when R7、R8And R9Is defined as when in (i), R7Is H, R8And R9Independently H, C1-C10 alkyl, C6-C10 aryl, halogen substituted C6-C10 aryl, 5-10 membered heteroaryl containing 1-2 heteroatoms and one or more of O, S and N, or-COOR12And R is8And R9Not H at the same time.
Preferably, when R is7、R8And R9(iii) when defined as in (ii), the 4-6 membered cycloalkyl group is a 5-6 membered cycloalkyl group, for example cyclopentane or cyclohexane.
Preferably, when R is
7、R
8And R
9(iv) is defined as the "5-to 7-membered heterocycloalkenyl group containing 1 to 2 hetero atoms, the hetero atom being one or more of O, S and N" and the R when mentioned in (iii)
7AThe "5-to 7-membered heterocycloalkenyl group containing 1 to 2 hetero atoms and one or more hetero atoms of O, S and N" in the substituted "5-to 7-membered heterocycloalkenyl group containing 1 to 2 hetero atoms and one or more hetero atoms of O, S and N" is "5-to 6-membered heterocycloalkenyl group containing 1 to 2 hetero atoms and hetero atoms of O and/or N", for example
Preferably, R is7AR in substituted 5-7 membered heterocycloalkenyl containing 1-2 heteroatoms selected from O, S and N7AThe number of substitution(s) may be 1 to 3 (e.g., 1 or 2), each R7AThe same or different.
Preferably, R is7AWherein the C1-C3 alkyl is methyl, ethyl, n-propyl orIsopropyl, such as methyl or ethyl.
Preferably, R is
7AThe substituted 5-to 7-membered heterocycloalkenyl group containing 1 to 2 hetero atoms, which is one or more of O, S and N is
Preferably, when R is
7、R
8And R
9When defined as in (iii), the 5-to 7-membered cycloalkenyl group is 5-to 6-membered cycloalkenyl, for example
In one embodiment, certain groups of the arylsulfonium salts of formula (II) are defined as follows, and undefined groups are as described in the previous embodiment:
x is S; r is halogen, C1-C10 alkyl, R
ASubstituted C1-C10 alkyl, C1-C10 alkoxy, R
BSubstituted C1-C10 alkoxy, 3-6 membered heterocycloalkyl having 1 or 2 heteroatoms, O and/or N, 5-6 membered cycloalkyl, -COOR
4、-OR
5C6-C10 aryl, R
CSubstituted C6-C10 aryl, benzyl,
In one embodiment, the boride of formula (III) is defined as follows, with undefined groups as described in the previous embodiment:
R1and R2Is H, R3Is C6-C10 aryl, RFSubstituted C6-C10 aryl, 5-12 membered heteroaryl containing 1-4 heteroatoms, wherein the heteroatoms are one or more of O, S and N, or RGSubstituted 5-12 membered heteroaryl containing 1-4 heteroatoms, which are one or more of O, S and N.
In one embodiment, the boride of formula (III) is defined as follows, with undefined groups as described in the previous embodiment:
OR
1and OR
2Together with the boron atom to which they are both attached form a C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group (e.g.
);R
3Is C6-C10 aryl, R
FSubstituted C6-C10 aryl, 5-12 membered heteroaryl containing 1-4 heteroatoms, wherein the heteroatoms are one or more of O, S and N, or R
GSubstituted 5-12 membered heteroaryl containing 1-4 heteroatoms, which are one or more of O, S and N.
In one embodiment, the boride of formula (III) is defined as follows, with undefined groups as described in the previous embodiment:
OR
1and OR
2Together with the boron atom to which they are both attached form a C1-C3 alkyl-substituted 5-to 6-membered heterocycloalkyl group (e.g.
);R
3Is composed of
Preferably, the aryl sulfonium salt shown in the formula (II) is selected from any one of the following structures:
preferably, the boride represented by the formula (III) is selected from any one of the following structures:
in the preparation method of the para-substituted aryl compound shown in the formula (I), the palladium catalyst can be a catalyst commonly used in the reaction in the field, and preferably, the palladium catalyst is Pd (I)tBu3P)2、Pd(PPh3)4、PdCl2(PPh3)2、PdCl2(dppf)、PdCl2(MeCN)2、Pd(OAc)2And Pd2(dba)3One or more of; more preferably, the palladium catalyst is Pd (C)tBu3P)2、Pd(PPh3)4、Pd(OAc)2And Pd2(dba)3(e.g. Pd: (a))tBu3P)2). Further, when the palladium catalyst is Pd (OAc)2Or Pd2(dba)3When the reaction system is used, a ligand can be added, and the ligand can be PPh3、BrettPhos、P(Cy)3、P(tBu)3And Brettphos, e.g. PPh3Brettphos and P (Cy)3One or more of (a).
In the preparation method of the para-substituted aryl compound shown in the formula (I), the palladium catalyst can be used in an amount which is conventional in such reactions in the art, and preferably, the molar ratio of the palladium catalyst to the aryl sulfonium salt shown in the formula (II) is 1: (10-40), for example 1:10, 1:20 or 1: 40.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the inert atmosphere can be an inert atmosphere commonly used in the art, such as nitrogen or argon.
In the method for preparing the para-substituted aryl compound represented by formula (I), the solvent may be a solvent conventional in the art for such reactions, and preferably, the solvent is one or more of amide solvents, sulfoxide solvents, ketone solvents, alcohol solvents, nitrile solvents and haloalkane solvents, wherein the amide solvents may be one or more of N-methylpyrrolidone, dimethylformamide and dimethylacetamide (such as dimethylformamide or dimethylacetamide); the sulfoxide solvent can be dimethyl sulfoxide; the ketone solvent may be acetone; the alcohol solvent can be one or more of methanol, ethanol and 2-methyl-2-butanol; the nitrile solvent may be acetonitrile; the haloalkane solvent can be dichloromethane and/or dichloroethane (e.g., dichloromethane).
More preferably, the solvent is one or more of an amide solvent, a ketone solvent, an alcohol solvent and a halogenated alkane solvent, for example, the solvent is a mixed solvent of a halogenated alkane solvent and an "amide solvent, a ketone solvent or an alcohol solvent".
In the preparation method of the para-substituted aryl compound shown in the formula (I), the solvent can be used in an amount which is conventional in the art for such reactions, and preferably, the molar volume ratio of the aryl sulfonium salt shown in the formula (II) to the solvent is 0.01-5.0mol/L, for example, 0.1 mol/L.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the base can be a base commonly used in the reaction in the field, and preferably, the base is alkali metal acetate (such as one or more of potassium acetate KOAc, sodium acetate NaOAc, cesium acetate CsOAc and lithium acetate LiOAc), alkali metal carbonate (such as potassium carbonate K)2CO3Sodium carbonate Na2CO3Lithium carbonate Li2CO3And cesium carbonate Cs2CO3One or more of), alkali metal bicarbonate (e.g., potassium bicarbonate, KHCO)3Sodium bicarbonate NaHCO3And cesium bicarbonate CsHCO3One or more of), an alkali metal carboxylate (e.g., one or more of potassium formate, sodium formate, potassium pivalate, sodium pivalate, and cesium pivalate), an alkali metal alkoxide (e.g., sodium methoxide CH)3ONa, potassium methoxide CH3OK, sodium ethoxide C2H5ONa and Potassium ethoxide C2H5OK), alkali metal fluoride (e.g., one or more of sodium fluoride, potassium fluoride, and cesium fluoride), and alkali metal phosphate (e.g., potassium dihydrogen phosphate, KH)2PO4And/or potassium phosphateK3PO4) One or more of; more preferably, the base is one or more of an alkali metal acetate (e.g., sodium acetate), an alkali metal carbonate (e.g., potassium carbonate and/or cesium carbonate), an alkali metal bicarbonate (e.g., sodium bicarbonate and/or potassium bicarbonate), and an alkali metal phosphate (e.g., potassium phosphate and/or potassium dihydrogen phosphate); further, the base is sodium bicarbonate.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the amount of the base can be the amount conventionally used in such reactions in the field, and preferably, the molar ratio of the aryl sulfonium salt shown in the formula (II) to the base is 1: (1-6), for example, 1: 3.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the boride shown in the formula (III) can be used in an amount which is conventional in the art, and preferably, the molar ratio of the aryl sulfonium salt shown in the formula (II) to the boride shown in the formula (III) is 1: (1-3), for example, 1: 1.5.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the temperature of the coupling reaction can be the conventional temperature of the reaction in the field, and preferably, the temperature of the coupling reaction is 25-150 ℃; for example 25-35 deg.c.
In the preparation method of the para-substituted aryl compound shown in the formula (I), the progress of the coupling reaction can be detected by a monitoring method (such as TLC, HPLC or NMR) which is conventional in the art, and an end point of the reaction is generally determined by disappearance or no longer reaction of the aryl sulfonium salt shown in the formula (II). The time for the coupling reaction may be 1 to 48 hours, for example 12 hours.
The preparation method of the para-substituted aryl compound shown in the formula (I) can further comprise a post-treatment step, wherein the post-treatment step can be a post-treatment conventional in the reaction in the field, such as quenching reaction (for example, quenching reaction by using dichloromethane), filtering (for example, diatomite filtering), removing the solvent and then performing chromatographic separation (for example, separation through a preparation plate).
The preparation method of the para-substituted aryl compound shown in the formula (I) can also comprise the following steps:
in the solvent, aromatic hydrocarbon compounds shown as a formula (IV), sulfonium salt reagent shown as a formula (V), trifluoromethanesulfonic anhydride, trifluoroacetic anhydride and HBF4·OEt2Performing sulfonium salination reaction on one or more of the above to obtain aryl sulfonium salt shown in formula (II);
wherein R, X and Y are as defined above.
In the method for preparing the aryl sulfonium salt represented by the formula (II), the solvent may be a conventional solvent for such reactions in the art, and preferably, the solvent is a haloalkane solvent and/or a nitrile solvent, such as dichloromethane or acetonitrile.
In the method for preparing the aryl sulfonium salt shown in the formula (II), the solvent can be used in an amount which is conventional in the field of such reactions, and preferably, the molar volume ratio of the aromatic hydrocarbon compound shown in the formula (IV) to the solvent is 0.01-5.0mol/L, for example 0.2 mol/L.
In the preparation method of the aryl sulfonium salt shown in the formula (II), the trifluoromethanesulfonic anhydride, trifluoroacetic anhydride and HBF4·OEt2One or more of "may be trifluoromethanesulfonic anhydride or trifluoroacetic anhydride, or trifluoroacetic anhydride and HBF4·OEt2Combinations of (a) and (b).
In the preparation method of the aryl sulfonium salt shown in the formula (II), the trifluoromethanesulfonic anhydride, trifluoroacetic anhydride and HBF4·OEt2The amount of one or more of "may be an amount conventionally used in such reactions in the art, and preferably, the aromatic hydrocarbon compound represented by the formula (IV) is reacted with the" trifluoromethanesulfonic anhydride, trifluoroacetic anhydride and HBF4·OEt2Is 1: (1-3), for example, 1: 1.2.
In the method for preparing the aryl sulfonium salt shown in the formula (II), the amount of the sulfonium salt reagent shown in the formula (V) can be the amount conventionally used in such reactions in the field, and preferably, the molar ratio of the aromatic hydrocarbon compound shown in the formula (IV) to the sulfonium salt reagent shown in the formula (V) is 1: (1-3), for example, 1: 1.2.
Preferably, the preparation method of the arylsulfonium salt represented by the formula (II) may be performed under an inert atmosphere, which may be an inert atmosphere commonly used in the art, such as nitrogen or argon.
In the preparation method of the aryl sulfonium salt shown in the formula (II), the temperature of the sulfonium salt reaction can be the conventional temperature of the reaction in the field, and preferably, the temperature of the sulfonium salt reaction is-40-35 ℃; for example, the temperature is raised to 25-35 ℃ for reaction for 50-70min after the reaction is carried out for 10-40min at-40 ℃.
In the preparation method of the aryl sulfonium salt shown in the formula (II), the progress of the sulfonium salination reaction can be detected by a conventional monitoring method in the field (such as TLC, HPLC or NMR), and generally the disappearance or no longer reaction of the aromatic hydrocarbon compound shown in the formula (IV) is taken as a reaction end point. The duration of the sulphonation reaction may be between 1 and 3 hours, for example 1.5 hours.
In the preparation method of the aryl sulfonium salt shown in the formula (II), preferably, the sulfonium salination reaction is directly performed without post-treatment.
The above preferred conditions can be arbitrarily combined to obtain preferred embodiments of the present invention without departing from the common general knowledge in the art.
The reagents and starting materials used in the present invention are commercially available.
The positive progress effects of the invention are as follows:
the method is characterized in that a monosubstituted aromatic hydrocarbon compound and thianthrene-S-oxide are designed to generate aryl sulfonium salt at para position of monosubstituted aromatic hydrocarbon with high selectivity under the action of a reagent, then the aryl sulfonium salt generated in situ by palladium catalysis is subjected to Suzuki-Miyaura coupling reaction with different aryl boric acid reagents, aromatic heterocyclic boric acid reagents and alkenyl borate reagents, and a plurality of monosubstituted aromatic hydrocarbon para-position aryl products, aromatic heterocyclic products and alkenyl products are obtained with high selectivity.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. The experimental methods without specifying specific conditions in the following examples were selected according to the conventional methods and conditions, or according to the commercial instructions.
In the following examples, the yield refers to the isolated yield unless otherwise specified.
In the following examples, the nuclear magnetic yield was determined as follows: after the crude product obtained by the post-treatment is dissolved by deuterated chloroform, 0.1mmol of dibromomethane (7uL) is added as an internal standard, and after nuclear magnetic crude spectrum is carried out, the nuclear magnetic yield of the target product is indicated by taking the characteristic peak integral of hydrogen of the dibromomethane as 1.
Example 1
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.5mmol), thianthrene-S-oxide (0.6mmol) and DCM (0.5mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. The solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (DCM/MeOH (20/1)) to give the sulfonium salt 2 a. Wherein the molar ratio (p/o) of the para-substituted product (sulfonium salt 2a) to the ortho-substituted product is 95.3/1.0, and there is no meta-substituted product.
Yield 92% isolated, white solid.1H NMR(400MHz,CDCl3)δ8.55–8.50(m,2H),7.89–7.82(m,4H),7.79–7.73(m,2H),7.24(d,J=8.4Hz,2H),7.07(d,J=8.4Hz,2H),2.33(s,3H);13CNMR(100MHz,CDCl3)δ144.26,136.33,134.87,134.81,131.30,130.25,130.02,127.75,120.75(q,J=319.0Hz),120.03,118.51,21.16;19F NMR(375MHz,CDCl3)δ-78.53;HRMS(ESI-TOF)m/z Calcd for C19H15S2(M+)307.0610,found:307.0614.
Example 2
(1) Palladium catalyst screening
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), palladium catalyst (0.01mmol) (as shown in table 1 below) were added under nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure, and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k as a white solid, with some unreacted sulfonium salt 2a in some experiments, as shown in Table 1, wherein the yields shown in Table 1 were determined by1H NMR determination (in CH)2Br2As an internal standard), when a ligand is added, the amount of the ligand added is 0.02mmol (e.g., Pd (OAc)2/PPh3In the specification, Pd (OAc)2(0.01mmol) as catalyst, PPh3(0.02mmol) as ligand).
3k:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=7.2Hz,2H),7.53(d,J=7.6Hz,2H),7.30–7.26(m,2H),3.94(s,3H),2.41(s,3H).
TABLE 1
(2) Screening for bases
Under a nitrogen atmosphere, mono-substituted aromatic hydrocarbon substrate 1a (0.2 mm) was sequentially added to a 25mL Schlenk tubeol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) was added, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Followed by addition of base (0.6mmol) under nitrogen (as shown in Table 2 below), arylboronic acid substrate 4k (0.3mmol), Pd (tBu)3P)2(0.01mmol), acetone (1.0mL) was added, the flask was closed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure, and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k as a white solid, with some unreacted sulfonium salt 2a in some experiments, as shown in Table 2, wherein the yields shown in Table 2 were determined by1H NMR determination (in CH)2Br2As an internal standard).
TABLE 2
(3) Screening of solvents
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Then NaHCO was added under nitrogen atmosphere3(0.6mmol), arylboronic acid substrate 4k (0.3mmol), Pd (tBu)3P)2(0.01mmol), solvent (1.0mL) (as shown in Table 3 below) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure, and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k as a white solid, with some unreacted sulfonium salt 2a remaining in the experiment, as shown in Table 3, wherein the yields shown in Table 3 were determined by1H NMR determination (in CH)2Br2As an internal standard).
TABLE 3
Example 3
To a 25mL Schlenk tube under nitrogen was added the mono-substituted arene substrate 1a (0.5mmol), phenoxathiin-10-oxide, DCM (0.5mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. The solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (DCM/MeOH (20/1)) to give the sulfonium salt 2 b. Wherein the molar ratio (p/o) of the para-substituted product (sulfonium salt 2b) to the ortho-substituted product is 76.8/1.0, and there is no meta-substituted product.
Isolated yield 94% as grey solid.1H NMR(400MHz,CDCl3)δ8.16(d,J=8.4Hz,2H),7.83(ddd,J=8.4,7.2,1.6Hz,2H),7.65–7.60(m,4H),7.52–7.47(m,2H),7.33(d,J=8.0Hz,2H),2.35(s,3H);13C NMR(100MHz,CDCl3)δ151.46,146.10,136.60,132.17,131.81,129.11,127.77,127.46,120.77(q,J=318.0Hz),120.29,105.97,21.49;19F NMR(375MHz,CDCl3)δ-78.61;HRMS(ESI-TOF)m/z Calcd for C19H15OS(M+)291.0838,found:291.0841.
Example 4
To a 25mL Schlenk tube, under a nitrogen atmosphere, were added sequentially mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (i.e., TTSO) (0.24mmol), DCM (1.0mL) and stirred at-40 deg.C. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Sodium bicarbonate (0.6mmol), arylboronic acid substrate 4a (0.3mmol), bis (tri-tert-butyl) were then added under a nitrogen atmosphereButylphosphine) Palladium (0.01mmol), acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc/DCM (50/1/1)) to give 3a (30.5mg) as a colorless liquid in 91% isolated yield.
1H NMR(400MHz,CDCl3)δ7.58(d,J=7.6Hz,2H),7.49(d,J=8.0Hz,2H),7.42(t,J=7.6Hz,2H),7.32(t,J=7.2Hz,2H),7.26–7.23(m,2H),2.40(s,3H).
Example 5
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4b (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give colorless crystals 3b (31.0mg) in 85% yield.
3b:1H NMR(400MHz,CDCl3)δ7.48(d,J=8.0Hz,4H),7.23(d,J=8.4Hz,4H),2.39(s,6H).
Example 6
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Followed by addition of carbon under nitrogen atmosphereSodium hydrogen carbonate (0.6mmol), arylboronic acid substrate 4c (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol), acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (50/1)) to afford 3c (43.9mg) as a white solid in 98% yield.
3c:1H NMR(400MHz,CDCl3)δ7.54–7.43(m,6H),7.25–7.22(m,2H),2.38(s,3H),1.36(s,9H).
Example 7
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 2d (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (9/1)) to give 3d (47.7mg) as a white solid in 97% yield.
3d:1H NM0R(400MHz,CDCl3)δ7.66–7.61(m,6H),7.54(d,J=8.0Hz,2H),7.45(t,J=7.4Hz,2H),7.35(t,J=7.4Hz,1H),7.27–7.23(m,2H),2.40(s,3H).
Example 8
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2O (0.24mmol), and then stirred at-40 ℃ for 30 minutesThen, the mixture was stirred at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4e (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3e (46.0mg) as a white solid in 96% yield.
3e:1H NMR(400MHz,CDCl3)δ7.60–7.55(m,4H),7.50(d,J=8.0Hz,2H),7.24(d,J=7.6Hz,2H),2.39(s,3H),0.30(s,9H).
Example 9
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4f (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (50/1/1)) to afford 3f (33.0mg) as a white solid in 83% yield.
3f:1H NMR(400MHz,CDCl3)δ7.51(d,J=8.8Hz,2H),7.45(d,J=8.0Hz,2H),7.24–7.20(m,2H),6.96(d,J=8.8Hz,1H),3.84(s,3H),2.38(s,3H).
Example 10
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), 4g (0.3mmol) of an arylboronic acid substrate and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (50/1/1)) to give 3g (40.0mg) of a pale yellow solid in 93% yield.
3g:1H NMR(400MHz,CDCl3)δ7.56–7.48(m,4H),7.37–7.33(m,2H),7.29–7.25(m,2H),2.55(s,3H),2.42(s,3H).
Example 11
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an arylboronic acid substrate (4 h) (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give a white solid for 3h (42.0mg) in 91% yield.
3h:1H NMR(400MHz,CDCl3)δ7.55–7.50(m,2H),7.44(d,J=8.4Hz,2H),7.24(d,J=8.0Hz,2H),7.14–7.08(m,2H),2.39(s,3H).
Example 12
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4i (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (100/1/1)) to give 3i (37.5mg) as a white solid in 93% yield.
3i:1H NMR(400MHz,CDCl3)δ7.50(d,J=8.4Hz,2H),7.45(d,J=8.0Hz,2H),7.39(d,J=8.4Hz,2H),7.26–7.24(m,2H),2.40(s,3H).
Example 13
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4j (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (50/1)) to afford 3j (38.4mg) as a white solid in 91% yield.
3j:1H NMR(400MHz,CDCl3)δ8.01(d,J=8.8Hz,2H),7.66(d,J=8.4Hz,2H),7.53(d,J=8.4Hz,2H),7.30–7.26(m,2H).,2.62(s,3H),2.41(s,3H).
Example 14
Under the atmosphere of nitrogen, the nitrogen gas is introduced into the reactor,to a 25mL Schlenk tube were added in sequence mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at room temperature for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/EtOAc (20/1)) to afford 3k (45.0mg) as a white solid in 99% yield.
Example 15
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at room temperature for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/EtOAc (20/1)) to afford 3k (45.0mg) as a white solid in 99% yield.
Example 16
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and DMF (1.0mL) were added under nitrogen atmosphere, the flask was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure, and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k as a white solid,the yield is 85 percent; unreacted sulfonium salt 2a, yield 14%.
Example 17
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and DMA (1.0mL) were added under a nitrogen atmosphere, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/EtOAc (20/1)) to afford 3k as a white solid in 98% yield.
Example 18
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), 4l (0.3mmol) of an arylboronic acid substrate, and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3l (49.0mg) of a white solid in 97% yield.
3l:1H NMR(400MHz,CDCl3)δ7.59–7.55(m,2H),7.47–7.43(m,2H),7.28–7.23(m,4H),2.40(s,3H).
Example 19
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4m (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at room temperature for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3m (42.5mg) as a white solid in 90% yield.
3m:1H NMR(400MHz,CDCl3)δ7.68(s,4H),7.50(d,J=8.4Hz,2H),7.28(d,J=7.6Hz,2H),2.42(s,3H).
Example 20
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 2n (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (100/1/1)) to give 3n (35.0mg) as colorless crystals in 96% yield.
3n:1H NMR(400MHz,CDCl3)δ7.26–7.21(m,8H),2.40(s,3H),2.28(s,3H).
Example 21
Under nitrogen atmosphere, inA25 mL Schlenk tube was charged with mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4o (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3o (33.0mg) as a white solid in 82% yield.
3o:1H NMR(400MHz,CDCl3)δ7.45(d,J=8.0Hz,1H),7.35–7.20(m,7H),2.40(s,3H).
Example 22
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4p (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (50/1/1)) to afford 3p as a white solid (35.2mg) in 89% yield.
3p:1H NMR(400MHz,CDCl3)δ7.49(d,J=8.4Hz,2H),7.34(t,J=8.0Hz,1H),7.26–7.23(m,2H),7.18–7.14(m,1H),7.12–7.09(m,1H),6.89–6.84(m,1H),3.86(s,3H),2.39(s,3H).
Example 23
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4q (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 3q (44.0mg) as a white solid in 97% yield.
3q:1H NMR(400MHz,CDCl3)δ8.27(s,1H),7.99(d,J=7.6Hz,1H),7.77(d,J=7.6Hz,1H),7.55–7.46(m,3H),7.29–7.26(m,2H),3.94(s,3H),2.41(s,3H).
Example 24
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4r (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (50/1)) to afford 3r (35.6mg) as a yellow solid in 83% yield.
3r:1H NMR(400MHz,CDCl3)δ8.43(t,J=1.8Hz,1H),8.18–8.14(m,1H),7.91–7.87(m,1H),7.58(t,J=8.0Hz,1H),7.52(d,J=8.0Hz,2H),7.30(d,J=8.0Hz,2H),2.42(s,3H).
Example 25
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4s (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3s (32.0mg) as a white solid in 74% yield.
3s:1H NMR(400MHz,CDCl3)δ7.41(d,J=8.0Hz,2H),7.21(d,J=7.6Hz,2H),7.06–7.01(m,2H),6.86(d,J=8.4Hz,1H),5.98(s,2H),2.38(s,3H).
Example 26
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4t (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3t (38.0mg) as a white solid in 87% yield.
3t:1H NMR(400MHz,CDCl3)δ8.02(s,1H),7.92–7.83(m,3H),7.76–7.72(m,1H),7.63(d,J=8.0Hz,2H),7.52–7.44(m,2H),7.30(d,J=8.0Hz,2H),2.42(s,3H).
Example 27
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4u (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (100/1/1)) to afford 3u (55.0mg) as a white solid in 91% yield.
3u:1H NMR(400MHz,CDCl3)δ7.99(s,2H),7.82(s,1H),7.51(d,J=8.0Hz,2H),7.31(d,J=8.0Hz,2H),2.42(s,3H).
Example 28
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4v (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the cap was screwed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc/DCM (25/1/1)) to afford 3v (50.0mg) as a pale yellow solid in 97% yield.
3v:1H NMR(400MHz,CDCl3)δ7.45(d,J=8.0Hz,2H),7.24(d,J=8.0Hz,2H),6.76(s,2H),3.92(s,6H),3.89(s,3H),2.40(s,3H).
Example 29
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4w (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the cap was screwed, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3w (44.0mg) as a white solid in 85% yield.
3w:1H NMR(400MHz,CDCl3)δ7.33–7.28(m,4H),2.42(s,3H).
Example 30
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4aa (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane) to give 3aa (26.9mg) as a white solid in 85% yield.
3aa:1H NMR(400MHz,CDCl3)δ7.69(s,1H),7.46(t,J=1.6Hz,1H),7.38(d,J=8.0Hz,2H),7.18(d,J=7.6Hz,2H),6.70–6.68(m,1H),2.36(s,4H).
Example 31
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4ab (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (50/1)) to give 3ab (34.5mg) as a white solid in 99% yield.
3ab:1H NMR(400MHz,CDCl3)δ7.49(d,J=8.0Hz,2H),7.41(t,J=2.2Hz,1H),7.37(d,J=2.0Hz,2H),7.21(d,J=8.0Hz,2H),2.37(s,3H).
Example 32
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4ac (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 4ac (34.5mg) as a white solid in 84% yield.
3ac:1H NMR(400MHz,CDCl3)δ7.83(d,J=8.0Hz,1H),7.77(s,1H),7.54(d,J=8.0Hz,3H),7.36–7.28(m,4H),2.42(s,3H).
Example 33
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4ad (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 3ad (42.0mg) as a white solid in 94% yield.
3ad:1H NMR(400MHz,CDCl3)δ7.82(d,J=8.0Hz,1H),7.75(d,J=8.0Hz,1H),7.61(d,J=8.0Hz,2H),7.50(s,1H),7.36–7.27(m,2H),7.23(d,J=8.0Hz,2H),2.39(s,3H).
Example 34
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4ae (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) were added under nitrogen, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 3ae (36.0mg) as a white solid in 89% yield.
3ae:1H NMR(400MHz,CDCl3)δ8.95(dd,J=4.0,1.6Hz,1H),8.19(dd,J=8.4,1.6Hz,1H),7.80(dd,J=8.4,1.6Hz,1H),7.72(dd,J=7.2,1.6Hz,1H),7.61–7.56(m,3H),7.40(dd,J=8.4,4.0Hz,1H),7.31(d,J=7.6Hz,2H),2.43(s,3H).
Example 35
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4af (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) were added under nitrogen, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 3af (32.0mg) as a white solid in 73% yield.
3af:1H NMR(400MHz,CDCl3)δ9.18(d,J=2.4Hz,1H),8.29(d,J=2.0Hz,1H),8.13(d,J=8.4Hz,1H),7.88(d,J=8.0Hz,1H),7.73–7.68(m,1H),7.63(d,J=8.4Hz,2H),7.58(t,J=7.4Hz,1H),7.34(d,J=8.0Hz,2H),2.44(s,3H).
Example 36
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4ag (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at 50 ℃ for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/5)) to give 3ag (25.0mg) as a white solid in 75% yield.
3ag:1H NMR(400MHz,CDCl3)δ8.84(s,1H),8.57(d,J=4.8Hz,1H),7.87–7.84(m,1H),7.49(d,J=8.0Hz,2H),7.35(dd,J=7.6,4.8Hz,1H),7.29(d,J=8.0Hz,2H),2.41(s,3H).
Example 37
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4ah (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) were added under nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/DCM (1/1)) to give 3ah (37.4mg) as a pale yellow solid in 92% yield.
3ah:1H NMR(400MHz,CDCl3)δ8.38(dd,J=4.8,2.0Hz,1H),7.66(dd,J=7.6,2.0Hz,1H),7.35(d,J=8.0Hz,2H),7.31–7.28(m,3H),2.42(s,3H);13C NMR(100MHz,CDCl3)δ149.77,148.13,139.61,138.24,136.97,134.56,129.13,129.04,122.49,21.25.HRMS(ESI-TOF)m/z Calcd for C12H11ClN[M+H]+:204.0575,found:204.0575.
Example 38
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4ai (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) were added under nitrogen, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure, and the crude product was isolated and purified on a prep. plate (hexane/DCM (1/1)) to give 3ai (35.0mg) as a pale yellow solid in 93% yield.
3ai:1H NMR(400MHz,CDCl3)δ8.18–8.16(m,1H),7.88–7.83(m,1H),7.47(dd,J=8.0,1.4Hz,2H),7.29–7.24(m,3H),2.41(s,3H);13C NMR(100MHz,CDCl3)δ160.44(d,J=239.0Hz),145.94(d,J=14.0Hz),140.45(d,J=5.0Hz),138.42,130.93(d,J=5.0Hz),129.42,128.63(d,J=3.0Hz),123.88(d,J=28.0Hz),121.75(d,J=4.0Hz),21.20;19F NMR(375MHz,CDCl3)δ-72.51.HRMS(ESI-TOF)m/z Calcd for C12H11FN[M+H]+188.0870,found:188.0869.
Example 39
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4aj (0.3mmol), bis (tri-tert-butylphosphine) palladium (0.02mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (9/1)) to give 3aj (39.0mg) as a white solid in 95% yield.
3ai:1H NMR(400MHz,CDCl3)δ7.95(dd,J=17.2,8.0Hz,1H),7.42(d,J=7.6Hz,2H),7.28(d,J=8.0Hz,2H),6.90(dd,J=8.0,2.8Hz,1H),2.41(s,3H);13C NMR(100MHz,CDCl3)δ160.33(dd,J=231.3,13.1Hz),157.74(dd,J=234.5,13.7Hz),144.73(dd,J=7.0,5.0Hz),138.50,129.92(d,J=4.8Hz),129.51,128.49(d,J=2.9Hz),120.61(dd,J=25.6,5.9Hz),106.39(ddd,J=34.5,5.7,1.5Hz),21.19;19F NMR(375MHz,CDCl3)δ-71.19,-71.71.HRMS(EI)m/z Calcd for C12H9F2N(M+)205.0698,found:205.0696.
Example 40
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenylboronic acid ester substrate 6a (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5a (28.0mg) as a colorless liquid in 72% yield.
5a:1H NMR(400MHz,CDCl3)δ7.36–7.29(m,5H),7.24(d,J=8.0Hz,2H),7.14(d,J=8.0Hz,2H),5.43(d,J=1.2Hz,1H),5.40(d,J=1.2Hz,1H),2.37(s,1H).
EXAMPLE 41
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenylboronic acid ester substrate 6b (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5b (30.0mg) as a colorless liquid in 79% yield.
5b:1H NMR(400MHz,CDCl3)δ7.66(d,J=16.0Hz,1H),7.42(d,J=8.0Hz,2H),7.19(d,J=8.0Hz,2H),6.39(d,J=16.0Hz,1H),4.26(q,J=6.8Hz,2H),2.37(s,3H),1.33(t,J=7.2Hz,3H).
Example 42
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenyl borate substrate 6c (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5c (22.0mg) as a colorless liquid in 83% yield.
5c:1H NMR(400MHz,CDCl3)δ7.14–7.04(m,4H),6.19(s,1H),2.40–2.35(m,2H),2.33(s,3H),2.27–2.22(m,2H),1.66–1.58(m,4H),1.55–1.50(m,2H).
Example 43
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenylboronic acid ester substrate 6d (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5d (22.0mg) as a colorless liquid in 76% yield.
5d:1H NMR(400MHz,CDCl3)δ7.12(s,4H),6.23(s,1H),2.33(s,3H),1.89(s,3H),1.85(s,3H).
Example 44
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), alkenylboronic acid ester substrate 6e (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5e (18.0mg) as a colorless liquid in 57% yield.
5e:1H NMR(400MHz,CDCl3)δ7.33(d,J=8.4Hz,2H),7.11(d,J=8.0Hz,2H),6.13–6.11(m,1H),2.71–2.67(m,2H),2.54–2.49(m,2H),2.33(s,3H),2.04–1.97(m,2H).
Example 45
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenylboronic acid ester substrate 6f (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 5f (31.0mg) as a colorless liquid in 90% yield.
5f:1H NMR(400MHz,CDCl3)δ7.27(d,J=8.0Hz,2H),7.11(d,J=8.0Hz,2H),6.10–6.05(m,1H),2.42–2.36(m,2H),2.32(s,3H),2.22–2.16(m,2H),1.81–1.73(m,2H),1.68–1.62(m,2H).
Example 46
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), 6g (0.3mmol) of an alkenyl borate substrate and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (50/1)) to give 5g (29.0mg) of a white solid in 63% yield.
5g:1H NMR(400MHz,CDCl3)δ7.29(d,J=8.0Hz,2H),7.11(d,J=8.0Hz,2H),5.96–5.93(m,1H),4.02(s,4H),2.67–2.63(m,2H),2.48–2.44(m,2H),2.33(s,3H),1.92(t,J=6.4Hz,2H).
Example 47
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), alkenylboronic acid ester substrate (6 h (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give a colorless liquid 5h (20.0mg) in 57% yield.
5h:1H NMR(400MHz,CDCl3)δ7.29(d,J=8.0Hz,2H),7.15(d,J=8.0Hz,2H),6.10–6.07(m,1H),4.32(q,J=2.8Hz,2H),3.93(t,J=5.2Hz,2H),2.53–2.49(m,2H),2.35(s,3H).
Example 48
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), alkenylboronic acid ester substrate 6i (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (10/1)) to give 5i (27.0mg) as a white solid in 50% yield.
5i:1H NMR(400MHz,CDCl3)δ7.27(d,J=8.4Hz,2H),7.14(d,J=8.0Hz,2H),5.99(s,1H),4.06(s,2H),3.63(t,J=5.6Hz,2H),2.51(s,2H),2.34(s,3H),1.49(s,9H).
Example 49
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), an alkenylboronic acid ester substrate 6j (0.3mmol) and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (MeOH/DCM (1/20)) to give 5j (20.0mg) as a white solid in 53% yield.
5j:1H NMR(400MHz,CDCl3)δ7.28(d,J=8.0Hz,2H),7.13(d,J=8.0Hz,2H),6.02–6.00(m,1H),3.13(d,J=3.2Hz,2H),2.69(t,J=5.6Hz,2H),2.62–2.58(m,2H),2.43(s,3H),2.33(s,3H);13C NMR(100MHz,CDCl3)δ138.01,136.72,134.57,128.97,124.82,120.67,54.91,52.28,45.62,28.03,21.04.HRMS(EI)m/z Calcd for C13H17N(M+)187.1355,found:187.1356.
Example 50
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 8a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7a (44.0mg) as a white solid in 92% yield.
7a:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=8.0Hz,2H),7.56(d,J=8.0Hz,2H),7.30(d,J=8.0Hz,2H),3.94(s,3H),2.71(q,J=7.6Hz,2H),1.28(t,J=7.6Hz,3H);13C NMR(100MHz,CDCl3)δ167.05,145.58,144.44,137.31,130.05,128.56,128.45,127.18,126.80,52.07,28.54,15.52.HRMS(EI)m/z Calcd for C16H16O2(M+)240.1145,found:240.1142.
Example 51
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 8b (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 7b as a white solid (47.3mg) in 93% yield.
7b:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=8.8Hz,2H),7.56(d,J=8.0Hz,2H),7.33(d,J=8.4Hz,2H),3.93(s,3H),3.00–2.93(m,1H),1.29(d,J=6.8Hz,6H);13C NMR(100MHz,CDCl3)δ167.04,149.04,145.55,137.43,130.04,128.54,127.17,127.00,126.80,52.07,33.83,23.93.HRMS(EI)m/z Calcd for C17H18O2(M+)254.1301,found:254.1298.
Example 52
To a 25mL Schlenk tube under a nitrogen atmosphere were added the mono-substituted aromatic substrate 8c (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (20/1)) to afford 7c as a white solid (53.0mg) in 99% yield.
7c:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=8.4Hz,2H),7.57(d,J=8.4Hz,2H),7.49(d,J=8.4Hz,2H),3.93(s,3H),1.36(s,9H).;13C NMR(100MHz,CDCl3)δ167.03,151.31,145.44,137.01,130.05,128.58,126.89,126.80,125.87,52.06,34.60,31.29.HRMS(EI)m/z Calcd for C18H20O2(M+)268.1458,found:268.1460.
Example 53
To a 25mL Schlenk tube under a nitrogen atmosphere were added sequentially the mono-substituted aromatic substrate 8d (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (20/1)) to afford 7d (57.6mg) as a white solid in 98% yield.
7d:1H NMR(400MHz,CDCl3)δ8.08(d,J=8.4Hz,2H),7.64(d,J=8.4Hz,2H),7.55(d,J=8.4Hz,2H),7.30(d,J=8.0Hz,2H),3.93(s,3H),2.58–2.52(m,1H),1.93–1.83(m,4H),1.77(d,J=12.8Hz,1H),1.51–1.36(m,4H),1.32–1.25(m,1H);13C NMR(100MHz,CDCl3)δ167.05,148.28,145.58,137.43,130.04,128.55,127.41,127.15,126.80,52.07,44.28,34.40,26.85,26.12.HRMS(ESI-TOF)m/z Calcd for C20H22NaO2[M+Na]+317.1512,found:317.1517.
Example 54
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 8e (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 7e (51.0mg) as a white solid in 84% yield.
7e:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.64(d,J=8.4Hz,2H),7.55(d,J=8.0Hz,2H),7.33–7.27(m,4H),7.23–7.18(m,3H),4.03(s,2H),3.93(s,3H).
Example 55
To a 25mL Schlenk tube under a nitrogen atmosphere were added the mono-substituted aromatic substrate 8f (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.02mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 7f as a white solid (46.0mg) in 80% yield.
7f:1H NMR(400MHz,CDCl3)δ8.13(d,J=8.0Hz,2H),7.74–7.67(m,6H),7.65(d,J=7.2Hz,2H),7.47(t,J=7.6Hz,2H),7.38(t,J=7.6Hz,1H),3.95(s,3H).
Example 56
To a 25mL Schlenk tube under a nitrogen atmosphere were added 8g (0.2mmol) of the mono-substituted aromatic substrate, followed by thianthrene-S-oxide (0.24mmol), and DCM (1.0mL) followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 7g (39.8mg) of a white solid in 81% yield.
7g:1H NMR(400MHz,CDCl3)δ8.07(d,J=8.0Hz,2H),7.61(d,J=8.4Hz,2H),7.57(d,J=8.8Hz,2H),6.99(d,J=8.4Hz,2H),3.93(s,3H),3.86(s,3H).
Example 57
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate for 8h (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.02mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 7h (43.0mg) as a white solid in 80% yield.
7h:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.8Hz,2H),7.63(dd,J=8.8,1.6Hz,4H),7.19(d,J=8.8Hz,2H),3.94(s,3H),2.33(s,3H);13C NMR(100MHz,CDCl3)δ169.45,166.93,150.72,144.71,137.73,130.13,128.98,128.34,126.99,122.07,52.14,21.14.HRMS(ESI-TOF)m/z Calcd for C16H15O4[M+H]+271.0965,found:271.0969.
Example 58
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8i (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.02mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (3/1)) to give 7i (50.0mg) as a white solid in 82% yield.
7i:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.63(d,J=8.4Hz,2H),7.59(d,J=8.8Hz,2H),7.37(t,J=8.4Hz,2H),7.14(t,J=7.6Hz,1H),7.08(t,J=8.4Hz,4H),3.94(s,3H);13C NMR(100MHz,CDCl3)δ166.97,157.68,156.78,144.90,134.80,130.12,129.84,128.60,126.68,123.63,119.21,118.95,52.09.HRMS(ESI-TOF)m/z Calcd forC20H16NaO3[M+Na]+327.0992,found:327.0999.
Example 59
To a 25mL Schlenk tube under nitrogen was added sequentially the monosubstituted aromatic substrate 8j (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.02mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7j (34.7mg) as a white solid in 62% yield.
7j:H NMR(400MHz,CDCl3)δ8.11(d,J=8.4Hz,2H),7.62(dd,J=8.4,2.4Hz,4H),7.22(d,J=8.8Hz,2H),6.56(t,J=73.8Hz,1H),3.94(s,3H);13C NMR(100MHz,CDCl3)δ166.88,151.16(d,J=2.8Hz),144.39,137.29,130.18,129.08,128.69,126.90,119.95,115.78(t,J=258.8Hz),52.16.19F NMR(375MHz,CDCl3)δ-81.34,-81.54.HRMS(EI)m/zCalcd for C15H12F2O3(M+)278.0749,found:278.0751.
Example 60
To a 25mL Schlenk tube under nitrogen was added sequentially 8k (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (20/1)) to give 7k (14.0mg) as a white solid in 24% yield.
7k:1H NMR(400MHz,CDCl3)δ8.11(d,J=8.8Hz,2H),7.66–7.61(m,4H),7.31(d,J=8.0Hz,2H),3.95(s,3H);13C NMR(100MHz,CDCl3)δ166.82,149.21(d,J=1.6Hz),144.13,138.68,130.19,129.26,128.65,127.00,121.33,120.44(q,J=255.8Hz),52.20.19F NMR(375MHz,CDCl3)δ-58.31.HRMS(EI)m/z Calcd for C15H11F3O3(M+)296.0655,found:296.0658.
Example 61
To a 25mL Schlenk tube under a nitrogen atmosphere were added 8l (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 7l (28.0mg) of a white solid in 47% yield.
7l:1H NMR(400MHz,CDCl3)δ8.07(d,J=8.0Hz,2H),7.62(d,J=8.0Hz,2H),7.57(d,J=8.8Hz,2H),6.99(d,J=8.4Hz,2H),3.93(s,3H),3.89(t,J=4.0Hz,4H),3.23(t,J=4.0Hz,2H).13C NMR(100MHz,CDCl3)δ167.10,151.16,145.16,131.00,130.08,127.98,126.15,115.57,66.80,52.04,48.84.HRMS(EI)m/z Calcd for C18H19NO3(M+)297.1361,found:297.1359.
Example 62
To a 25mL Schlenk tube under a nitrogen atmosphere were added sequentially 8m (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (DCM) to give 7m (43.0mg) as a white solid in 73% yield.
7m:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.0Hz,2H),7.73(d,J=8.8Hz,2H),7.67–7.62(m,4H),3.95–3.88(m,5H),2.65(t,J=7.6Hz,2H),2.24–2.16(m,2H);13C NMR(100MHz,CDCl3)δ174.36,166.97,144.82,139.44,135.77,130.11,128.69,127.57,126.67,120.07,52.10,48.66,32.75,17.96.HRMS(ESI-TOF)m/z Calcd for C18H18NO3[M+H]+296.1281,found:296.1285.
Example 63
To a 25mL Schlenk tube under nitrogen was added sequentially the monosubstituted aromatic substrate 8n (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by prep. plate separation (DCM) to give 7n (36.2mg) as a white solid in 64% yield.
7n:1H NMR(400MHz,CDCl3)δ8.13(d,J=8.4Hz,2H),7.67(dd,J=8.0,2.0Hz,4H),7.30(d,J=8.4Hz,2H),3.95(s,3H),3.31(s,3H),1.94(s,3H);13C NMR(100MHz,CDCl3)δ170.50,166.82,144.45,144.27,139.41,130.20,129.31,128.53,127.51,126.97,52.18,37.16,22.48HRMS(ESI-TOF)m/z Calcd for C17H18NO3[M+H]+284.1281,found:284.1288.
Example 64
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8o (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 7o (30.0mg) as a white solid in 65% yield.
7o:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.4Hz,2H),7.63–7.56(m,4H),7.15(t,J=8.8Hz,2H),3.94(s,3H);13C NMR(100MHz,CDCl3)δ166.91,164.16,161.70,144.58,136.11(d,J=4.0Hz),130.15,128.91(d,J=8.0Hz),126.87,115.86(d,J=21.0Hz),52.14.19FNMR(375MHz,CDCl3)δ-114.75.HRMS(EI)m/z Calcd for C14H11FO2(M+)230.0738,found:230.0737.
Example 65
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8p (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 7p (16.0mg) as a white solid in 33% yield.
7p:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.0Hz,2H),7.62(d,J=8.4Hz,2H),7.55(d,J=8.4Hz,2H),7.43(d,J=8.4Hz,2H),3.94(s,3H).
Example 66
To a 25mL Schlenk tube under a nitrogen atmosphere were added sequentially 8q (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7q (30.7mg) as a white solid in 54% yield.
7q:1H NMR(400MHz,CDCl3)δ8.11(d,J=8.4Hz,2H),7.65(d,J=8.4Hz,2H),7.62(d,J=8.0Hz,2H),7.46(d,J=8.0Hz,2H),5.16(s,2H),3.94(s,3H),2.13(s,3H);13C NMR(100MHz,CDCl3)δ170.86,166.92,145.02,139.96,135.89,130.12,129.06,128.82,127.45,127.00,65.88,52.13,21.00.HRMS(EI)m/z Calcd for C17H16O4(M+)284.1043,found:284.1046.
Example 67
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8r (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (3/2)) to give 7r (37.0mg) as a white solid in 51% yield.
7r:1H NMR(400MHz,CDCl3)δ8.08(d,J=8.4Hz,2H),7.88–7.84(m,2H),7.74–7.69(m,2H),7.62-7.52(m,6H),4.90(s,2H),3.93(s,3H);13C NMR(100MHz,CDCl3)δ168.02,166.93,145.05,139.55,136.29,134.04,132.07,130.07,129.18,128.94,127.56,126.96,123.39,52.11,41.24.HRMS(EI)m/z Calcd for C23H17NO4(M+)371.1156,found:371.1152.
Example 68
To a 25mL Schlenk tube under nitrogen was added sequentially 8S (0.2mmol) of the mono-substituted aromatic substrate, 0.24mmol of thianthrene-S-oxide, DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by prep. plate separation (DCM) to give 7s (51.0mg) as a white solid in 66% yield.
7s:1H NMR(400MHz,CDCl3)δ8.08(d,J=8.4Hz,2H),7.85–7.80(m,2H),7.73–7.68(m,2H),7.63(d,J=8.4Hz,2H),7.55(d,J=8.0Hz,2H),7.35(d,J=8.0Hz,2H),3.99–3.91(m,5H),3.05(t,J=8.0Hz,2H);13C NMR(100MHz,CDCl3)δ168.14,166.97,145.21,138.26,138.10,133.93,132.02,130.04,129.42,128.74,127.37,126.83,123.23,52.08,39.07,34.22.HRMS(EI)m/z Calcd for C24H20NO4[M+H]+386.1387,found:386.1389.
Example 69
To a 25mL Schlenk tube under nitrogen was added 8t (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol) and DCM (0.2mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 7t (78.0mg) as a white solid in 97% yield.
7t:1H NMR(400MHz,CDCl3)δ8.07(d,J=8.4Hz,2H),7.84–7.78(m,2H),7.70–7.65(m,2H),7.59(d,J=8.0Hz,2H),7.49(d,J=8.4Hz,2H),7.28(d,J=8.0Hz,2H),3.93(s,3H),3.77(t,J=7.2Hz,2H),2.74(t,J=7.8Hz,2H),2.12–2.03(m,2H);13C NMR(100MHz,CDCl3)δ168.36,166.97,145.32,141.16,137.56,133.83,132.04,129.98,128.84,128.58,127.17,126.75,123.09,52.04,37.72,32.80,29.54.HRMS(EI)m/z Calcd for C25H21NO4(M+)399.1471,found:399.1465.
Example 70
To a 25mL Schlenk tube under nitrogen was added sequentially 8u (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to afford 7u (39.0mg) as a white solid in 68% yield.
7u:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.4Hz,2H),7.65(d,J=8.4Hz,2H),7.57(d,J=8.0Hz,2H),7.30(d,J=8.0Hz,2H),3.94(s,3H),3.56(t,J=6.4Hz,2H),2.84(t,J=7.4Hz,2H),2.16–2.09(m,2H);13C NMR(100MHz,CDCl3)δ166.98,145.32,140.83,137.85,130.08,129.12,128.72,127.33,126.81,52.08,44.13,33.88,32.38.HRMS(EI)m/z Calcdfor C17H17ClO2(M+)288.0912,found:288.0914.
Example 71
To a 25mL Schlenk tube under nitrogen was added sequentially 8v (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc (10/1)) to afford 7v (47.0mg) as a white solid in 87% yield.
7v:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=8.4Hz,2H),7.56(d,J=8.4Hz,2H),7.32(d,J=8.4Hz,2H),3.94(s,3H),3.65(t,J=7.2Hz,2H),3.38(s,3H),2.94(t,J=7.2Hz,2H);13C NMR(100MHz,CDCl3)δ167.00,145.44,139.20,137.90,130.05,129.41,128.67,127.23,126.83,73.38,58.71,52.09,35.84.HRMS(ESI-TOF)m/zCalcd for C17H19O3[M+H]+271.1329,found:271.1335.
Example 72
To a 25mL Schlenk tube under nitrogen was added sequentially 8w (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.8mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 1M HCl (5.0mL), the organic phase was separated, the aqueous phase was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated and purified by prep. plate separation (DCM/MeOH (20/1)) to afford 7w (46.0mg) as a white solid in 85% yield.
7w:1H NMR(400MHz,(CD3)2SO)δ8.02(d,J=8.4Hz,2H),7.81(d,J=8.4Hz,2H),7.66(d,J=8.4Hz,2H),7.36(d,J=8.0Hz,2H),3.87(s,3H),2.87(t,J=7.2Hz,2H),2.58–2.53(m,2H).13C NMR(100MHz,(CD3)2SO)δ174.39,166.59,145.07,142.03,136.98,130.30,129.55,128.68,127.39,127.23,52.67,35.83,31.22.HRMS(ESI-TOF)m/z Calcd forC17H15O4[M-H]-283.0976,found:283.0981.
Example 73
To a 25mL Schlenk tube under nitrogen was added sequentially 8X (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7X (40.0mg) as a white solid in 68% yield.
7x:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.0Hz,2H),7.64(d,J=8.0Hz,2H),7.56(d,J=8.0Hz,2H),7.30(d,J=8.0Hz,2H),3.94(s,3H),3.69(s,3H),3.01(t,J=7.8Hz,2H),2.68(t,J=7.8Hz,2H).13C NMR(100MHz,CDCl3)δ173.21,167.00,145.32,140.65,138.00,130.08,128.88,128.74,127.37,126.84,52.10,51.68,35.52,30.55.HRMS(EI)m/zCalcd for C18H18O4(M+)298.1203,found:298.1200.
Example 74
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8y (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.8mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 1M HCl (5.0mL), the organic phase was separated, the aqueous phase was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated and purified by prep. plate (DCM/MeOH (20/1)) to afford 7y (43.0mg) as a white solid in 80% yield.
7y:1H NMR(400MHz,(CD3)2SO)δ8.04(d,J=8.0Hz,2H),7.83(d,J=8.4Hz,2H),7.70(d,J=8.4Hz,2H),7.39(d,J=8.0Hz,2H),3.88(s,3H),3.64(s,2H).13C NMR(100MHz,(CD3)2SO)δ173.06,166.56,144.95,137.60,135.91,130.67,130.30,128.81,127.34,127.31,52.66,40.76.HRMS(ESI-TOF)m/z Calcd for C16H13O4[M-H]-269.0819,found:269.0824.
Example 75
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8z (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc (10/1)) to give 7z (45.0mg) as a white solid in 79% yield.
7z:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.8Hz,2H),7.65(d,J=8.4Hz,2H),7.59(d,J=8.4Hz,2H),7.38(d,J=8.4Hz,2H),3.94(s,3H),3.72(s,3H),3.69(s,2H);13C NMR(100MHz,CDCl3)δ171.86,166.99,145.17,138.87,133.98,130.10,129.86,128.90,127.46,126.94,52.15,52.12,40.81.HRMS(EI)m/z Calcd for C17H16O4(M+)284.1043,found:284.1043.
Example 76
To a 25mL Schlenk tube under nitrogen was added sequentially 8aa (0.2mmol) of the mono-substituted aromatic hydrocarbon substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.8mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 1M HCl (5.0mL), the organic phase was separated, the aqueous phase was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated via prep. plate purification (DCM/MeOH (20/1)) to afford 7aa (45.0mg) as a white solid in 79% yield.
7aa:1H NMR(400MHz,(CD3)2SO)δ8.02(d,J=8.8Hz,2H),7.80(d,J=8.4Hz,2H),7.66(d,J=8.4Hz,2H),7.40(d,J=8.4Hz,2H),3.88(s,3H),3.65(dd,J=14.0,7.0Hz,1H),1.36(d,J=7.2Hz,3H).13C NMR(100MHz,(CD3)2SO)δ176.17,166.55,145.07,143.52,137.25,130.26,128.70,128.68,127.26,127.22,52.62,46.01,19.38.HRMS(EI)m/z Calcdfor C17H16O4(M+)284.1045,found:284.1043.
Example 77
To a 25mL Schlenk tube under nitrogen was added sequentially the monosubstituted aromatic substrate 8ab (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1) to give 7ab (44.0mg) as a white solid in 63% yield.
7ab:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.0Hz,2H),7.65(d,J=8.4Hz,2H),7.59(d,J=8.4Hz,2H),7.49(d,J=8.4Hz,2H),3.94(s,3H),3.67(s,3H),2.55–2.48(m,2H),1.79–1.65(m,5H),1.55–1.45(m,2H),1.32–1.28(m,1H);13C NMR(100MHz,CDCl3)δ175.56,167.00,145.06,143.91,138.31,130.08,128.85,127.28,126.88,126.54,52.11,50.80,34.68,25.53,23.64.HRMS(EI)m/z Calcd for C22H24O4(M+)352.1669,found:352.1672.
Example 78
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8ac (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (5/1)) to afford 7ac (54.6mg) as a white solid in 61% yield.
7ac:1H NMR(400MHz,CDCl3)δ8.04(d,J=8.8Hz,2H),7.82–7.78(m,2H),7.72–7.67(m,2H),7.57(d,J=8.8Hz,2H),7.47(d,J=8.0Hz,2H),7.26(d,J=8.0Hz,2H),5.21(dd,J=10.8,6.0Hz,1H),3.92(s,3H),3.80(s,3H),3.69–3.58(m,2H);13C NMR(100MHz,CDCl3)δ169.24,167.46,166.93,144.99,138.36,136.82,134.15,131.54,129.99,129.40,128.75,127.36,126.76,123.52,53.06,52.94,52.07,34.30.HRMS(EI)m/z Calcd for C26H22NO6[M+H]+444.1442,found:444.1443.
Example 79
To a 25mL Schlenk tube under nitrogen was added sequentially 8ad (0.2mmol) of the mono-substituted aromatic substrate, 0.24mmol of thianthrene-S-oxide, DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (hexane/EtOAc (2/1)) to give 7ad (40.0mg) as a white solid in 57% yield.
7ad:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.4Hz,2H),7.64(d,J=8.0Hz,2H),7.60(d,J=8.0Hz,2H),7.31(d,J=8.0Hz,2H),4.75–4.69(m,1H),4.28–4.19(m,2H),3.94(s,3H),3.36(dd,J=13.2,3.2Hz,1H),2.85(dd,J=13.6,9.6Hz,1H),2.58(s,3H).13C NMR(100MHz,CDCl3)δ170.59,167.13,153.65,144.91,139.14,135.18,130.17,130.01,128.98,127.83,126.94,66.18,54.96,52.24,37.50,23.82.HRMS(ESI-TOF)m/z Calcd forC20H19NNaO5[M+Na]+376.1155,found:376.1161.
Example 80
To a 25mL Schlenk tube under nitrogen was added sequentially the monosubstituted aromatic substrate 8ae (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7ae (47.0mg) as a white solid in 82% yield.
7ae:1H NMR(400MHz,CDCl3)δ8.08(d,J=8.8Hz,2H),7.61(d,J=8.8Hz,2H),7.57(d,J=8.8Hz,2H),7.01(d,J=8.8Hz,2H),4.29(dd,J=10.8,3.2Hz,1H),4.01(dd,J=10.8,5.6Hz,1H),3.93(s,1H),3.41–3.36(m,1H),2.93(t,J=4.4Hz,1H),2.79(dd,J=4.8,2.8Hz,1H);13C NMR(100MHz,CDCl3)δ167.03,158.70,145.05,132.97,130.10,128.40,128.34,126.49,115.06,68.84,52.07,50.10,44.69.HRMS(ESI-TOF)m/z Calcd forC17H17O4[M+H]+285.1121,found:285.1126.
Example 81
To a 25mL Schlenk tube under nitrogen was added sequentially 8af (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane (2/1)) to give 7af (40.0mg) as a white solid in 62% yield.
7af:1H NMR(400MHz,CDCl3)δ8.13(d,J=8.4Hz,2H),7.73–7.68(m,4H),7.66(d,J=8.0Hz,2H),7.57(d,J=8.4Hz,2H),7.43(d,J=8.4Hz,2H),3.95(s,3H);13C NMR(100MHz,CDCl3)δ166.95,144.89,139.73,139.17,138.85,133.68,130.17,129.02,128.27,127.74,127.46,126.89,52.15.HRMS(EI)m/z Calcd for C20H15ClO2(M+)322.0755,found:322.0756.
Example 82
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8ag (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane/DCM (1/1)) to give 7ag (108.0mg) as a white solid in 97% yield.
7ag:1H NMR(400MHz,CDCl3)δ8.30(d,J=8.8Hz,2H),8.07(d,J=8.4Hz,2H),7.89(d,J=8.8Hz,2H),7.58(d,J=8.4Hz,2H),7.51(d,J=8.4Hz,2H),7.29–7.26(m,2H),7.25–7.21(m,2H),7.19–7.13(m,3H),3.92(s,3H),3.34–3.28(m,2H),3.23–3.18(m,2H),2.62–2.51(m,4H);13C NMR(100MHz,CDCl3)δ166.88,150.02,145.94,145.04,144.60,143.12,137.84,130.11,128.97,128.82,128.51,127.46,127.29,126.78,126.73,126.51,124.32,52.13,44.17,43.16,35.53.HRMS(ESI-TOF)m/z Calcd for C31H28O6N2SNa[M+Na]+579.1560,found:579.1565.
Example 83
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8ah (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (10/1)) to afford 7ah (70.0mg) as a white solid in 91% yield.
7ah:1H NMR(400MHz,CDCl3)δ8.10(d,J=8.8Hz,2H),7.63(d,J=8.4Hz,2H),7.60(d,J=8.8Hz,2H),7.46(d,J=9.2Hz,2H),7.08(d,J=8.8Hz,2H),6.94(d,J=9.2Hz,2H),3.95(s,3H);13C NMR(100MHz,CDCl3)δ157.12,156.12,144.80,135.36,132.81,130.18,128.76,128.67,126.75,120.76,119.16,116.09,52.20.HRMS(ESI-TOF)m/z Calcd forC20H15BrNaO3[M+Na]+405.0097,found:405.0102.
Example 85
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8ai (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified on a prep. plate (hexane/EtOAc (20/1) to give 7ai (64.0mg) as a white solid in 70% yield.
7ai:1H NMR(400MHz,CDCl3)δ8.15(dd,J=5.2,1.2Hz,1H),8.08(d,J=8.4Hz,2H),7.62(d,J=8.4Hz,2H),7.59–7.53(m,3H),7.03–6.98(m,4H),6.97–6.93(m,2H),6.89–6.84(m,1H),6.75(d,J=8.4Hz,1H),5.63–5.56(m,1H),4.23–4.18(m,1H),4.11–4.06(m,1H),3.93(s,3H),1.49(d,J=6.4Hz,3H);13C NMR(100MHz,CDCl3)δ167.02,163.13,158.90,155.49,149.81,146.76,144.99,138.70,134.07,130.11,128.49,126.62,121.00,117.75,116.77,115.87,111.67,109.97,71.05,69.23,52.09,16.99.HRMS(ESI-TOF)m/z Calcdfor C28H26NO5[M+H]+456.1805,found:456.1818.
Example 85
To a 25mL Schlenk tube under nitrogen was added sequentially the mono-substituted aromatic substrate 8aj (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the flask was closed and reacted at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by prep. plate separation (DCM) to give 7aj (87.0mg) as a white solid in 99% yield.
7aj:1H NMR(400MHz,CDCl3)δ8.14(d,J=8.4Hz,2H),8.04(dd,J=8.8,2.4Hz,1H),7.80(d,J=9.2Hz,1H),7.74(d,J=2.4Hz,1H),7.70(d,J=8.8Hz,2H),7.67(d,J=8.4Hz,2H),7.41(s,1H),7.17(d,J=8.4Hz,2H),3.96(s,3H),3.20(s,3H);13C NMR(100MHz,CDCl3)δ166.84,154.23,146.01,144.10,143.69,137.84,134.06,130.25,129.52,129.28,126.98,120.05,119.67,117.37,112.10,52.20,40.65.HRMS(ESI-TOF)m/z Calcd forC21H17O7N2S[M-H]-441.0762,found:441.0768.
Example 86
To a 25mL Schlenk tube under nitrogen was added sequentially 8ak (0.2mmol) of the mono-substituted aromatic substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.8mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under nitrogen, DMF (1.0mL) was added, the flask was screwed on, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 1M HCl (5.0mL), the organic phase was separated, the aqueous phase was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated and purified via prep-plate (hexane/EtOAc (2/1) to afford 7ak (57.0mg) as a white solid in 76% yield.
7ak:1H NMR(400MHz,(CD3)2SO)δ12.51(s,1H),8.07(d,J=8.4Hz,2H),7.90(d,J=8.4Hz,2H),7.87(d,J=8.0Hz,2H),7.69(d,J=7.6Hz,2H),7.57(t,J=8.2Hz,1H),7.30–7.23(m,1H),3.89(s,3H),3.80(q,J=7.0Hz,1H),1.42(d,J=7.2Hz,3H).13C NMR(100MHz,(CD3)2SO)δ175.33,166.51,160.68,158.23,144.52,143.90(d,J=8.0Hz),138.59,135.38,131.06(d,J=4.0Hz),130.33,129.87(d,J=3.0Hz),129.07,127.56(d,J=27.0Hz),126.40(d,J=13.0Hz),124.62(d,J=3.0Hz),115.75(d,J=23.0Hz),52.66,44.60,18.75.19F NMR(375MHz,(CD3)2SO)δ-117.89.HRMS(ESI-TOF)m/z Calcd for C23H20FO4[M+H]+379.1340,found:379.1339.
Example 87
To a 25mL Schlenk tube under nitrogen was added sequentially 8aa (0.2mmol) of the mono-substituted aromatic hydrocarbon substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (1.0mmol), an alkenylborate substrate 6f (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was carried out at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 0.25M HCl (5.0mL), the organic phase was separated, the water box was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated and purified by prep. plate (DCM/MeOH (25/1)) to afford drug molecule 8(Tetriprofen) (24.0mg) in 52% yield.
Tetriprofen:1H NMR(400MHz,CDCl3)δ7.34(d,J=8.4Hz,2H),7.26–7.23(m,2H),6.12–6.07(m,1H),3.72(q,J=7.2Hz,1H),2.41–2.35(m,2H),2.23–2.17(m,2H),1.80–1.74(m,2H),1.69–1.62(m,2H),1.50(d,J=7.2Hz,3H).
Example 88
To a 25mL Schlenk tube under nitrogen was added sequentially 8aa (0.2mmol) of the mono-substituted aromatic hydrocarbon substrate, thianthrene-S-oxide (0.24mmol), DCM (0.2mL) and stirred at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (1.0mmol), an alkenylboronic acid ester substrate 6d (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was carried out at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of 0.25M HCl (5.0mL), the organic phase was separated, the water box was extracted with DCM, the organic phases were combined, the solvent was spun off under reduced pressure, and the crude product was isolated and purified by prep. plate (DCM/MeOH (25/1)) to give 9(29.0mg) in 71% yield. 9(0.2mmol) was dissolved in 5mL of ethanol, palladium on carbon (4.2mg,10 wt%) was added, and then hydrogen was replaced 5 times. Followed by a reaction at 50 ℃ for 4 hours. After the reaction, the mixture was filtered through celite and rinsed with ethyl acetate. The organic phases were combined, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (DCM/MeOH (20/1)) to give the drug molecule 10(Ibuprofen) (36.0mg) in 86% yield.
9:1H NMR(400MHz,CDCl3)δ7.28–7.25(m,2H),7.18(d,J=8.4Hz,2H),6.23(s,1H),3.72(q,J=7.2Hz,1H),1.89(s,3H),1.85(s,3H),1.51(d,J=7.2Hz,3H).
Ibuprofen:1H NMR(400MHz,CDCl3)δ7.22(d,J=8.0Hz,2H),7.10(d,J=8.0Hz,2H),3.70(q,J=7.2Hz,1H),2.44(d,J=7.2Hz,2H),1.89–1.79(m,1H),1.49(d,J=7.2Hz,3H),0.89(d,J=6.8Hz,6H).
Example 89
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 8e (6.0mmol), thianthrene-S-oxide (7.2mmol) and DCM (30.0mL) in that order, followed by stirring at-40 ℃. Tf2O (7.2mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), pinacol phenylboronate (9.0mmol) and palladium bis (tri-tert-butylphosphino) (0.3mmol) were added under a nitrogen atmosphere, DMF (30.0mL) was added, the flask was closed, and the reaction was carried out at 50 ℃ for 12 hours. After the reaction was complete, the solvent was filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate isolation (toluene/hexane (40/1)) to give 11 as a white solid (1.24g) in 84% yield. Under a nitrogen atmosphere, 11(0.2mmol), NBS (0.2mmol), AIBN (0.02mmol), and CCl were charged into a 20mL reaction flask4(2.5 mL). The reaction was refluxed for 50 minutes. Cooled to room temperature, the reaction mixture was filtered and washed 2 times with n-hexane (2X 2 mL). After concentration, imidazole (1.57mmol), potassium carbonate (0.61mmol) and acetonitrile (4.3mL) were added. The reaction was refluxed for 1 hour. After cooling to room temperature, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (5/3)) to afford the drug molecule 12(Bifonazole) (47.9mg) in 77% yield.
11:1H NMR(400MHz,CDCl3)δ7.59–7.54(m,2H),7.54–7.50(m,2H),7.45–7.39(m,2H),7.35–7.19(m,8H),4.03(s,2H).
Bifonazole:1H NMR(400MHz,CDCl3)δ7.58(d,J=8.1Hz,4H),7.49–7.42(m,3H),7.41–7.33(m,4H),7.22–7.10(m,5H),6.90(s,1H),6.57(s,1H).
Example 90
To a 25mL Schlenk tube, substrate 14(0.2mmol), phenoxathiin-10-oxide or thianthrene-S-oxide (0.6mmol) was added in this order under a nitrogen atmosphere, DCM (0.3mL) was added, and the mixture was stirred at-40 ℃. Tf2O (0.6mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), phenylboronic acid (0.6mmol) and bis (tri-tert-butylphosphino) palladium (0.02mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the cap was screwed on, and the reaction was carried out at 50 ℃ for 12 hours. After the reaction was completed, 0.2M (10.0mL) hydrochloric acid was added to quench the reaction, and the organic phase was separated. The aqueous phase was extracted 3 times with DCM (3X 10 mL). The organic phases were combined, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (PhMe/isoproapanol/AcOH ═ 100:10:1) to give drug molecule 15(57mg, 73%) and monosubstituted product 15' (8.0mg, 13%).
15:1H NMR(400MHz,CDCl3)δ7.59–7.27(m,16H),6.95(d,J=8.8Hz,2H),4.96–4.91(m,1H),3.40–3.33(m,2H).13C NMR(100MHz,CDCl3)δ175.34,156.88,140.75,140.45,140.04,135.32,135.01,129.92,128.74,128.73,128.36,127.24,127.03,126.90,126.80,115.65,77.42,38.42.HRMS(ESI-TOF)m/z Calcd for C27H21O3[M-H]-393.1496,found:393.1504.
15’:1H NMR(400MHz,CDCl3)δ7.53–7.25(m,13H),6.91(d,J=8.8Hz,2H),4.89(t,J=6.4Hz,1H),3.35–3.26(m,2H).
Example 91
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. TFAA (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at room temperature for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k (39.0mg) as a white solid in 86% yield.
Example 92
Under nitrogen atmosphere, a 25mL Schlenk tube was charged with mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol), and HBF in that order4·OEt2(0.24mmol), CH was added3CN (1.0mL), followed by stirring at-40 ℃. TFAA (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid substrate 4k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.005mmol) and acetone (1.0mL) were added under a nitrogen atmosphere, and the reaction was stirred at room temperature for 12 hours by screwing the cap. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k (40.7mg) as a white solid in 90% yield.
Example 93
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Tf2O (0.24mmol) was slowly added dropwise thereto, followed by stirring at-40 ℃ for 30 minutes and then at room temperature for 1 hour. Subsequently, sodium bicarbonate (0.6mmol), alkenyl borate substrate 6k (0.3mmol), bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane) to give 5k (25.5mg) as a colorless liquid in 63% yield.
5k:1H NMR(400MHz,CDCl3)δ=7.26(d,J=7.9Hz,2H),7.12(d,J=7.9Hz,2H),6.37(d,J=15.8Hz,1H),6.19(dt,J=15.8,6.9Hz,1H),2.34(s,3H),2.20(dd,J=16.0,8.0Hz,2H),1.47(q,J=7.4Hz,2H),1.41-1.27(m,7H),0.92(m,3H).
Example 94
To a 25mL Schlenk tube under nitrogen was added the mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), 6l (0.3mmol) of an alkenylboronic acid ester substrate, and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 5l (37.4mg) of a white solid in 82% yield.
5l:1H NMR(400MHz,CDCl3):δ7.44–7.40(m,4H),7.33(d,J=8.4Hz,2H),7.19(d,J=8.0Hz,2H),7.06(d,J=16.0Hz,1H),7.00(d,J=16.0Hz,1H),2.37(s,3H).
Example 95
To a 25mL Schlenk tube under nitrogen was added in sequence mono-substituted aromatic substrate 1a (0.2mmol), thianthrene-S-oxide (0.24mmol), DCM (1.0mL) followed by-40 deg.CStirring the mixture. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), alkenyl borate substrate 6m (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, DMF (1.0mL) was added, the flask was closed, and the reaction was stirred at 50 ℃ for 12 hours. After the reaction was complete, the reaction was quenched by addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was isolated and purified by preparative plate (hexane) to give 5m (21.0mg) as a yellow solid in 52% yield.
5m:1H NMR(400MHz,CDCl3):1H NMR(400MHz,CDCl3)δ(ppm)7.35(d,J=8.0Hz,2H),7.19–7.09(m,4H),7.03(d,J=3.2Hz,1H),6.99–6.96(m,1H),6.89(d,J=16.0Hz,1H),2.33(s,3H)。
Example 96
To a 25mL Schlenk tube under a nitrogen atmosphere were added the monosubstituted arene substrate 1a (0.2mmol), phenoxathiin-10-oxide (0.24mmol) and DCM (1.0mL) in that order, followed by stirring at-40 ℃. Slowly drop Tf2After O (0.24mmol), the mixture was stirred at-40 ℃ for 30 minutes, followed by stirring at room temperature for 1 hour. Subsequently, sodium hydrogencarbonate (0.6mmol), arylboronic acid ester substrate 4k (0.3mmol), and bis (tri-tert-butylphosphino) palladium (0.01mmol) were added under a nitrogen atmosphere, acetone (1.0mL) was added, the cap was screwed on, and the reaction was stirred at room temperature for 12 hours. After the reaction was complete, the reaction was quenched by the addition of a small amount of DCM, filtered through celite, the solvent was spun off under reduced pressure and the crude product was purified by preparative plate separation (hexane/EtOAc (20/1)) to give 3k (43.0mg) as a white solid in 95% yield.
3k:1H NMR(400MHz,CDCl3)δ8.09(d,J=8.4Hz,2H),7.65(d,J=7.2Hz,2H),7.53(d,J=7.6Hz,2H),7.30–7.26(m,2H),3.94(s,3H),2.41(s,3H)。