[go: up one dir, main page]

CN1063432C - N-取代的顺-n-丙烯基乙酰胺类及其制备方法 - Google Patents

N-取代的顺-n-丙烯基乙酰胺类及其制备方法 Download PDF

Info

Publication number
CN1063432C
CN1063432C CN96106187A CN96106187A CN1063432C CN 1063432 C CN1063432 C CN 1063432C CN 96106187 A CN96106187 A CN 96106187A CN 96106187 A CN96106187 A CN 96106187A CN 1063432 C CN1063432 C CN 1063432C
Authority
CN
China
Prior art keywords
formula
substituted
general formula
cis
optionally
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN96106187A
Other languages
English (en)
Other versions
CN1142489A (zh
Inventor
R·兰茨施
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Pharma AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of CN1142489A publication Critical patent/CN1142489A/zh
Application granted granted Critical
Publication of CN1063432C publication Critical patent/CN1063432C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C235/00Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
    • C07C235/02Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C235/32Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton containing six-membered aromatic rings
    • C07C235/34Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton containing six-membered aromatic rings having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00Carboxylic acid amides
    • C07C233/01Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/02Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
    • C07C233/04Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C233/05Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00Carboxylic acid amides
    • C07C233/01Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/02Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
    • C07C233/04Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C233/06Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a ring other than a six-membered aromatic ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/61Halogen atoms or nitro radicals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00Systems containing only non-condensed rings
    • C07C2601/12Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14The ring being saturated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

本发明涉及通式(Ⅰ)新的N-取代的顺-N-丙烯基乙酰胺。其制备方法以及它们在制备2-氯-5-甲基吡啶方面的用途,所述通式(Ⅰ)如下,式中R1代表在各种情况下均可任选地被取代的烷基,-C(烷基)2-链烯基、炔基、环烷基、环烷基烷基、芳烷基或杂芳基烷基。

Description

N-取代的顺-N-丙烯基乙酰胺类及其制备方法
本发明涉及可用作制备农业用化学活性化合物的中间体的新的N-取代的顺-N-丙烯基乙酰胺类及其制备方法。
已有披露式(A)N-链烯基乙酰胺如下获得:使式(B)亚胺与乙酸酐或乙酰氯按下反应式反应,若合适,反应在酸接受剂存在下进行(参见J.Chem.Soc.Perkin Trans.Ⅰ 1984,1173-82和EP-A 0546418)。
然而该方法得到相应的反式衍生物;顺式衍生物的制备方法尚未有描述。
本发明涉及1)通式(Ⅰ)新的N-取代的顺-N-丙烯基乙酰胺
式中R1代表在各种情况下均可任选地被取代的烷基、-C(烷基)2-链烯基、炔基、环烷基、环烷基烷基、芳烷基或杂芳基烷基;2)通式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺的制备方法,通式(Ⅰ)如下:
Figure 9610618700051
式中R1代表在各种情况下均可任选地被取代的烷基、-C(烷基)2-链烯基、炔基、环烷基、环烷基烷基、芳烷基或杂芳基烷基;所述方法的特征在于:将通式(Ⅱ)乙酰胺用强碱。若合适,在稀释剂存在下异构化,所述通式(Ⅱ)如下:
Figure 9610618700052
式中R1的定义同上;和3)通式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺通过借助于“Vilsmeier试剂”即与通式(Ⅲ)甲酰胺衍生物和氯化剂的反应在制备式(Ⅳ)2-氯-5-甲基吡啶方面的应用,所述反应在20-150℃之间的温度,若合适,在稀释剂存在下进行;所述式(Ⅳ)和通式(Ⅲ)如下:式中R2和R3相同或不同,代表烷基或环烷基,或一起代表烷烃二基。
令人惊讶的是,虽然迄今已有人描述了使用羰基铁作为重排催化剂(参见例如J.Chem.Soc.Perkin Trans,Ⅱ,1973,第1954-1957页)的光化学反应的类似的异构化方法,但新的式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺可用本发明方法以简便的方式的非常好的收率获得。因此,按照本发明的方法尤其适于在工业规模上制备,这对在先技术是个有价值的补充。
式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺用于制备2-氯-5-甲基吡啶。
优选用本发明方法制备的式(Ⅰ)化合物是式中取代基如下定义的化合物:R1代表可任选地被C1-C2烷氧基取代的C1-C6烷基;或代表1-丁烯-4-基,2-丁烯-4-基;丙炔基或丁炔基;或代表环丙基,环丁基,环戊基,环己基,环丙基甲基,环丁基甲基,环戊基甲基或环己基甲基;或代表苄基,苯基乙基,苯基丙基,萘基甲基,噻吩基甲基或吡啶基甲基,它们各自均可任选地被相同的或不同的取代基单取代至三取代,在所有情况下均可提及的取代基是卤素、C1-C4烷基和C1-C4烷氧基。
特别优选用本发明方法制备的式(Ⅰ)化合物是式中取代基如下定义的化合物:R1代表甲基,乙基,正或异丙基,和正、异、仲或叔丁基,它们均可任选地被甲氧基或乙氧基取代;或代表苄基或苯基乙基,它们各自均可任选地被相同的或不同的取代基单取代或双取代,可提及的取代基是氟,氯,溴,甲基,乙基,正或异丙基,正、异、仲或叔丁  基,甲氧基如乙氧基;或代表环己基或氯吡啶甲基。
在普通术语或优选范围中的基团的上述定义均适用于式(Ⅰ)终产物,同样适用于该制备所需的原料。
如果例如将N-甲基-N-烯丙基乙酰胺用作原料并将氢氧化钾用作碱,则按照本发明的方法的反应过程可用下面的反应式表示:
Figure 9610618700071
式(Ⅱ)给出了在用于制备式(Ⅰ)化合物的本发明方法中用作原料的乙酰胺类的总定义。在式(Ⅱ)中,R1优选或特别优选具有上面关于作为优选的或特别优选的式(Ⅰ)新化合物的R1的描述中已经述及的那些意义。
式(Ⅱ)乙酰胺是已知的和/或可用本身已知的方法(参见例如DE-OS(德国公开说明书)2334632或J.Chem.Soc.Perkin Trans.Ⅰ 1993,2344)来制备。
按照本发明的异构化在强碱存在下进行。所述强碱包括例如碱金属氢氧化物,例如氢氧化锂,氢氧化钠或氢氧化钾,还包括醇的碱金属盐,例如甲醇钠、乙醇钠、异丙醇钠、正丁醇钠、仲丁醇钠、叔丁醇钠,正丁醇钾、仲丁醇钾或叔丁醇钾。
若合适,按照本发明的异构化在稀释剂存在下进行。适宜的稀释剂是惰性的且最好是非质子的极性溶剂,尤其包括醚类,例如甲基叔丁基醚、甲基叔戊基醚、1,2-二甲氧基乙烷、二乙氧基甲烷、乙二醇二甲醚或乙二醇二乙醚,还包括腈类,例如乙腈、丙腈、苄腈或丁腈,还包括酰胺类,例如甲酰胺、二甲基甲酰胺、二乙基甲酰胺、二环己基甲酰胺、二丁基甲酰胺、乙酰胺、二甲基乙酰胺、N-甲基吡咯烷酮、N-甲基-E-己内酰胺,脲类,例如四甲基脲,亚砜类和砜类,例如二甲亚砜或四氢噻吩砜。
在进行本发明的异构化时,反应温度可在相当宽的范围内变动。一般来讲,根据所用的碱和/或可任选使用的溶剂,该过程在-20-+150℃、最好是0-100℃之间的温度进行,以实现足够高的反应速率。
为进行按照本发明的异构化,每摩尔式(Ⅱ)乙酰胺一般使用0.01-2mol、尤其是0.05-1mol之间量的碱。
后处理可按常规方法用水来进行。在将碱中和后,将混合物用适当的溶剂萃取。化合物可用蒸馏法纯化。若使用催化量的碱而不使用溶剂或使用适宜于下一步骤的溶剂,则化合物可不经分离和纯化直接进一步反应得到式(Ⅳ)2-氯-5-甲基吡啶。
可用按照本发明的异构化法制备的式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺可以通过与式(Ⅲ)甲酰胺衍生物和氯化剂反应制得式(Ⅳ)2-氯-5-甲基吡啶。
可如此制备的2-氯-5-甲基吡啶可用作杀虫剂的中间体(参见例如EP-A 0163855)。
令人惊讶的是,用该途径可以简便的方式和良好的收率获得2-氯-5-甲基吡啶,尽管式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺中的取代基的空间排例似乎对于吡啶环化并不适宜:
Figure 9610618700081
式(Ⅲ)给出了也被用作制备式(Ⅳ)化合物2-氯-5-甲基吡啶的原料的甲酰胺衍生物的总定义。在式(Ⅲ)中,R2和R3相同或不同,最好代表具有1-6个碳原子的直链或支链烷基,例如特别是甲基,乙基,正或异丙基或者正、异、仲或叔丁基;还代表具有3-6个碳原子的环烷基,例如特别是环戊基或环己基;以及一同代表具有2-6个碳原子的烷烃二基,例如特别是丁烷-1,4-二基或戊烷-1,5-二基。
可提及的式(Ⅲ)甲酰胺衍生物的实例是:N,N-二甲基甲酰胺,N,N-二乙基甲酰胺,N,N-二丙基甲酰胺,N,N-二丁基甲酰胺,N-环己基-N-甲基甲酰胺,N,N-二环己基甲酰胺。
式(Ⅲ)甲酰胺衍生物是公知的有机合成用化学制品。
制备式(Ⅳ)2-氯-5-甲基吡啶的方法用氯化剂来实施。常规氯化剂可用于此目的,例如磷酰氯,氯化磷(Ⅴ),光气,草酰氯,亚硫酰氯,全氯丁酰氯,二氯苯并间二氧杂环戊烯(dichlorobenzodioxol),氯化N,N-二甲基-氯甲基亚铵(immonium)或氯化N,N-二乙基-氯甲基亚铵。
实施制备式(Ⅳ)2-氯-5-甲基吡啶的方法的适宜的稀释剂是常规有机溶剂,尤其包括脂族、脂环族或芳族可任选地被卤代的烃类,例如汽油、苯、甲苯、二甲苯、氯苯、二氯苯、石油醚、己烷、环己烷、二氯甲烷、氯仿、四氯甲烷;醚类,例如乙醚、异丙醚、二氧六环、四氢呋喃或乙二醇二甲醚或乙二醇二乙醚;腈类,例如乙腈、丙腈或丁腈;醚胺类;例如N,N-二甲基甲酰胺、N,N-二甲基乙酰胺、N-甲基N-甲酰苯胺、N-甲基吡咯烷酮或六甲基磷酰三胺;亚砜类,例如二甲亚砜。和砜类,例如四氢噻吩砜。
在进行式(Ⅳ)2-氯-5-甲基吡啶的制备时,反应温度可在相当宽的范围内变动。一般来讲,该过程在-30-+150℃、最好在-10-+120℃之间的温度进行,起始阶段最好在-10-+40℃之间进行,而后续阶段在+20-120℃之间进行。然而还可以直接在高温下进行该过程并就地制备“Vilsmeier试剂”。
该过程在大气压下进行。但也可以在加压或减压、一般是在0.1-10巴之间的压力下进行。
为实施式(Ⅳ)2-氯-5-甲基吡啶的制备方法,每摩尔式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺一般使用在1-10mol之间、最好是在1.5-5.0mol之间、特别是在2.0-4.0mol之间的氯化剂和在1-10mol之间、最好是在2.0-4.0mol之间的式(Ⅲ)甲酰胺衍生物。
后处理按常规方法进行。
制备实施例
实施例1(碱:叔丁醇钾;溶剂:1,2-二甲氧基乙烷)
将9.47g(0.05mol)N-苄基-N-烯丙基乙酰胺溶于50ml干燥的1,2-二甲氧基乙烷中。在保护性气体下于20℃加入5.6g(0.05mol)叔丁醇钾。反应放热,并且溶液的颜色变成暗红色。将混合物在搅拌下于40℃加热1小时,加入冰水,并将pH调至7。将混合物用二氯甲烷萃取三次后,将合并的有机相干燥并浓缩。
得到9.3g红色油状物,经球管蒸馏(套管温度150℃,0.5毫巴)进行纯化。
获得8.3g(收率:87.6%)折射率=1.535的顺-N-苄基-N-丙烯基乙酰胺。-1H NMR(CDCl3,d in ppm):1.42-1.45(dd,CH3),2.05(s,CH2),4.63(s,CH2),5.47-5.52(m,CH),5.97-6.00(dd,CH),~7.3(m,5H)。(碱:氢氧化钾;溶剂:二甲亚砜)
将9.47g(0.05mol)N-苄基-N-烯丙基乙酰胺溶于30ml二甲亚砜中,加入0.28g(0.005mol)氢氧化钾。将混合物于室温搅拌24小时。将大部分溶剂真空蒸出,加入冰水,并将pH调至中性。按上述进行后处理。
得到9.1g(未蒸馏);含量:91.3%,相当于87.7%的收率。(碱:氢氧化钾;溶剂:无)
将9.47g(0.05mol)N-苄基-N-烯丙基乙酰胺和0.66g(0.01mol)氢氧化钾粉(85%)在搅拌且无溶剂存在的条件下于80℃加热1小时。将混合物冷却,加入冰水,并将pH用稀盐酸调至8。将混合物用二氯甲烷萃取3次。将有机相合并,干燥,并减压蒸出(旋转蒸发器)溶剂。
得到9.1g橙色油状物,N-苄基-N-顺丙烯基乙酰胺的含量为87.5%(GC),若需要,可将其用蒸馏法进一步纯化。
类似于实施例1并按照制备通法说明,还可以获得下表所列的其它实施例的式(Ⅰ)化合物:
Figure 9610618700111
Figure 9610618700112
2-氯-5-甲基吡啶(Ⅳ)的制备
Figure 9610618700121
将10.4g(含量:91.3%,0.05mol)顺-N-苄基-N-丙烯基乙酰胺溶于25ml乙腈中。然后加入11g(0.15mol)二甲基甲酰胺,随后在冷却下于20-25℃滴加19g(0.15mol)草酰氯。接着将混合物回流18小时,冷却,并真空蒸出溶剂。将反应产物与冰水一同搅拌,并用二氯甲烷萃取3次。将有机相合并,干燥并浓缩。
得到11.8g澄清的液体;该2-氯-5-甲基吡啶可通过蒸馏被纯化,含量47%。收率:86.9%。

Claims (5)

1.通式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺式中R1代表可任选地被C1-C2烷氧基取代的C1-C6烷基;或代表1-丁烯-4-基,2-丁烯-4-基;丙炔基或丁炔基;或代表环丙基,环丁基,环戊基,环己基,环丙基甲基,环丁基甲基,环戊基甲基或环己基甲基;或代表苄基,苯基乙基,苯基丙基,萘基甲基,噻吩基甲基或吡啶基甲基,它们各自均可任选地被相同的或不同的取代基单取代至三取代,在所有情况下均可提及的取代基是卤素、C1-C4烷基和C1-C4烷氧基。
2.按照权利要求1的N-取代的顺-N-丙烯基乙酰胺,其中R1代表甲基,乙基,正或异丙基,和正、异、仲或叔丁基,它们均可任选地被甲氧基或乙氧基取代;或代表苄基或苯基乙基,它们各自均可任选地被相同的或不同的取代基单取代或双取代,可提及的取代基是氟,氯。溴,甲基,乙基,正或异丙基,正、异、仲或叔丁基,甲氧基和乙氧基;或代表环己基或氯吡啶甲基。
3.通式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺的制备方洗,通式(Ⅰ)如下:R1代表可任选地被C1-C2烷氧基取代的C1-C6烷基;或代表1-丁烯-4-基,2-丁烯-4-基;丙炔基或丁炔基;或代表环丙基,环丁基,环戊基,环己基,环丙基甲基,环丁基甲基,环戊基甲基或环己基甲基;或代表苄基,苯基乙基,苯基丙基,萘基甲基,噻吩基甲基或吡啶基甲基,它们各自均可任选地被相同的或不同的取代基单取代至三取代,在所有情况下均可提及的取代基是卤素、C1-C4烷基和C1-C4烷氧基;所述方法的特征在于:将通式(Ⅱ)乙酰胺用强碱,若合适,在稀释剂存在下异构化,所述通式(Ⅱ)如下:式中R1的定义同上。
4.按照权利要求3的方法,其中的R1代表甲基,乙基,正或异丙基,和正、异、仲或叔丁基,它们均可任选地被甲氧基或乙氧基取代;或代表苄基或苯基乙基,它们各自均可任选地被相同的或不同的取代基单取代或双取代,可提及的取代基是氟,氯,溴,甲基,乙基,正或异丙基,正、异、仲或叔丁基,甲氧基和乙氧基;或代表环己基或氯吡啶甲基。
5.按照权利要求1的通式(Ⅰ)N-取代的顺-N-丙烯基乙酰胺在制备下式(Ⅳ)2-氯-5-甲基吡啶方面的应用:
CN96106187A 1995-06-14 1996-06-14 N-取代的顺-n-丙烯基乙酰胺类及其制备方法 Expired - Lifetime CN1063432C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19521588A DE19521588A1 (de) 1995-06-14 1995-06-14 N-substituierte cis-N-Propenyl-acetamide und Verfahren zu ihrer Herstellung
DE195215885 1995-06-14

Publications (2)

Publication Number Publication Date
CN1142489A CN1142489A (zh) 1997-02-12
CN1063432C true CN1063432C (zh) 2001-03-21

Family

ID=7764332

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96106187A Expired - Lifetime CN1063432C (zh) 1995-06-14 1996-06-14 N-取代的顺-n-丙烯基乙酰胺类及其制备方法

Country Status (12)

Country Link
US (1) US5852194A (zh)
EP (1) EP0748798B1 (zh)
JP (1) JP4127867B2 (zh)
KR (1) KR100424199B1 (zh)
CN (1) CN1063432C (zh)
BR (1) BR9602779A (zh)
DE (2) DE19521588A1 (zh)
ES (1) ES2183894T3 (zh)
HU (1) HU220837B1 (zh)
IL (1) IL118629A (zh)
TW (1) TW426656B (zh)
ZA (1) ZA965023B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10255582A (ja) * 1997-03-14 1998-09-25 Brother Ind Ltd キーボード装置
DE10206543A1 (de) 2002-02-16 2003-08-28 Heidenhain Gmbh Dr Johannes Getriebe sowie mit diesem Getriebe ausgestatteter Drehgeber
EP1348699B1 (en) * 2002-03-25 2010-05-05 Council of Scientific and Industrial Research Process for the preparation of 2-chloro-5-methylpyridine-3-carbaldehyde
US7632972B2 (en) * 2003-10-30 2009-12-15 The Board Of Trustees Of The University Of Illionis Compounds and methods for treatment of cancer and modulation of programmed cell death for melanoma and other cancer cells
CN105330592A (zh) * 2015-11-23 2016-02-17 上海晋景化学有限公司 一种2-氯-5-甲基吡啶的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546418A1 (de) * 1991-12-13 1993-06-16 Bayer Ag Verfahren zur Herstellung von 5-substituierten 2-Chlorpyridinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334632A1 (de) * 1973-07-07 1975-01-23 Hoechst Ag Verfahren zur herstellung n,n-disubstituierter carbonsaeureamide
DE4407182A1 (de) * 1994-03-04 1995-09-07 Bayer Ag N-Acyloxyalkyl-carbonsäureamide und Verfahren zu ihrer Herstellung
KR100388696B1 (ko) * 1994-09-19 2003-11-14 니폰 쇼쿠바이 컴파니 리미티드 3급n-알케닐카르복실산아미드류의제조용촉매및이촉매를이용한3급n-알케닐카르복실산아미드류의제조방법

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546418A1 (de) * 1991-12-13 1993-06-16 Bayer Ag Verfahren zur Herstellung von 5-substituierten 2-Chlorpyridinen

Also Published As

Publication number Publication date
ES2183894T3 (es) 2003-04-01
DE19521588A1 (de) 1996-12-19
HU220837B1 (en) 2002-06-29
HU9601636D0 (en) 1996-08-28
JPH093017A (ja) 1997-01-07
KR970001309A (ko) 1997-01-24
CN1142489A (zh) 1997-02-12
KR100424199B1 (ko) 2004-06-18
IL118629A0 (en) 1996-10-16
JP4127867B2 (ja) 2008-07-30
HUP9601636A2 (en) 1997-04-28
DE59609768D1 (de) 2002-11-14
EP0748798A1 (de) 1996-12-18
HUP9601636A3 (en) 1997-05-28
TW426656B (en) 2001-03-21
ZA965023B (en) 1997-01-23
IL118629A (en) 2000-07-16
EP0748798B1 (de) 2002-10-09
US5852194A (en) 1998-12-22
BR9602779A (pt) 1998-09-08

Similar Documents

Publication Publication Date Title
JPH07258187A (ja) 脂肪族イミンの製造方法
US6214998B1 (en) Process for preparing 2-chloro-5-chloromethylthiazole
JP3186886B2 (ja) 2−クロロ−5−メチル−ピリジンの製造方法
CN1063432C (zh) N-取代的顺-n-丙烯基乙酰胺类及其制备方法
KR100237257B1 (ko) 5-치환된 2-클로로피리딘의 제조방법
KR100519420B1 (ko) 헤테로아릴카복실아미드및에스테르의제조방법
KR20030029055A (ko) 2,2-디메틸-5-(4-클로로벤질)시클로펜타논의 제조 방법 및이를 위해 유용한 중간체
GB1571990A (en) Process for the preparation of cyanoacetic acid anilide derivatives
JP2991832B2 (ja) ピリミジン誘導体の製造方法
US4374067A (en) Intermediates for the preparation of 4-phenyl-1,3-benzodiazepins and methods for preparing the intermediates
JP3794729B2 (ja) N−アシルオキシアルキル−カルボキシアミド及びその製造方法
JP3186897B2 (ja) 2−アミノ−5−メチル−ピリジンの製造方法
KR0163206B1 (ko) 친전자성 반응에 의한 방향족 화합물의 제조방법 및 방향족 화합물 유도체
JP3895786B2 (ja) クロロピリジニウムクロリド類及びその製造法
KR100441348B1 (ko) 에피나스틴 염산염의 중간체인 6-모르판트리돈의 새로운제조방법
US4461728A (en) Preparation of 4-phenyl-1,3-benzodiazepins
CN106905098A (zh) 一种邻碘代α‑酰氧基羰基化合物的合成方法
HU200439B (en) Process for production of substituated acetilen compositions
JPH1135550A (ja) イソチオシアネート化合物及びその製造法
JPH0794423B2 (ja) フタロニトリル化合物
JPS6124379B2 (zh)
HU188207B (en) New process for preparing phenyl-ethanol-amines
JPH0583537B2 (zh)
JPH09309872A (ja) N−ベンゾイルヒダントイン酸類及びその製法
KR20000052892A (ko) 나프티리딘 화합물의 제조 방법 및 신규 중간 생성물

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: BAYER INTELLECTUAL PROPERTY GMBH

Free format text: FORMER OWNER: BAYER AKTIENGESELLSCHAFT

Effective date: 20150609

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150609

Address after: German Monheim

Patentee after: Bayer Pharma Aktiengesellschaft

Address before: Germany Leverkusen

Patentee before: Bayer Aktiengesellschaft

CX01 Expiry of patent term

Granted publication date: 20010321

EXPY Termination of patent right or utility model