CN111100058B - 一类3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物及其合成方法和应用 - Google Patents
一类3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物及其合成方法和应用 Download PDFInfo
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- 238000010189 synthetic method Methods 0.000 title description 3
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- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 10
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- 229910000024 caesium carbonate Inorganic materials 0.000 claims description 2
- 229940011182 cobalt acetate Drugs 0.000 claims description 2
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- 229910000160 potassium phosphate Inorganic materials 0.000 claims description 2
- 235000011009 potassium phosphates Nutrition 0.000 claims description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 2
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
- C07D209/42—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/542—Dye sensitized solar cells
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Abstract
本发明公开了一类3,3‑二羧酸酯基‑二氢吲哚‑2‑硫酮类化合物及其合成方法,以式(1)所示的N‑烷基/N‑芳基硫代酰胺为原料,在氧化剂,催化剂和碱的存在下,在有机溶剂中,50℃至80℃的条件下,发生分子内C(sp2)‑H和C(sp3)‑H的去氢偶联反应,得到所述的3,3‑二羧酸酯基‑二氢吲哚‑2‑硫酮类化合物。本发明3,3‑二羧酸酯基‑二氢吲哚‑2‑硫酮类化合物的合成方法通过条件控制,具有收率良好,简单高效,后处理方便等优点。本发明还公开了所述的3,3‑二羧酸酯基‑二氢吲哚‑2‑硫酮类化合物在合成医药和光电材料中的应用。
Description
技术领域
本发明属于合成医药、化工领域,主要涉及一类3,3-二羧酸酯基-二氢吲哚 -2-硫酮类化合物及其合成方法和应用。
背景技术
2,3-二氢吲哚又名吲哚啉,最主要用途是医药和农药合成的中间体,以三乙基苄基氯化铵为催化剂与芳醛反应可合成一系列(E)-3-亚苄基-2,3-二氢吲哚-2-酮衍生物,还可以合成溴芬酸钠,是非甾体消炎药,具有强力镇痛作用。吲哚啉类染料用作准固态染料敏化太阳能电池的敏剂,具有良好的光电转化性能。该类化合物的系列衍生物均具有很好的应用前景,因此,开发一种新的二氢吲哚 -2-硫酮类化合物也是在该领域的一种极具应用价值的尝试。
发明内容
本发明的目的是针对现有技术的不足而提供的一类3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物及其合成方法,其合成方法采用了便宜易得的催化剂、氧化剂和碱,高效快速地以中等至良好的收率合成了3,3-二羧酸酯基-二氢吲哚-2- 硫酮类化合物。该方法操作简单,反应较为快速,处理方便,收率良好,且具有一定的官能团耐受性。
本发明提出了3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物及其合成方法。
本发明提出的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物,具下式(2)结构:
其中,
R1为氢、烷基、酯基、酰基、卤素、烷氧基、磺酰胺基等;
R2为烷基、苄基、有取代的烷基等;
R3、R4独自为烷基、苄基等。
优选地,R1为氢、甲基、甲氧基、磺酰胺基、卤素、甲酸乙酯基、乙酰基等;
R2为甲基、异丙基、正己基、苄基、3-甲氧基丙基等;
R3、R4独自为甲基、乙基、异丙基、苄基等。
本发明提出的一种3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物的合成方法,包括:在有机溶剂中,在50℃至80℃温度条件下,式(1)所示的N-烷基/N- 芳基硫代酰胺和氧化剂、催化剂以及碱发生分子内C(sp2)-H和C(sp3)-H的去氢偶联反应,得到如式(2)所示的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物。
所述反应过程如反应式(Ⅰ)所示:
其中,R1为氢、烷基、酯基、酰基、卤素、烷氧基、磺酰胺基等;
R2为烷基、苄基、有取代的烷基等;
R3、R4独自为烷基、苄基等。
优选地,R1为氢、甲基、甲氧基、磺酰胺基、卤素、甲酸乙酯基、乙酰基等;
R2为甲基、异丙基、正己基、苄基、3-甲氧基丙基等;
R3、R4独自为甲基、乙基、异丙基、苄基等。
其中,所述式(1)所示的N-烷基/N-芳基硫代酰胺与氧化剂的摩尔比为1: 2;N-烷基/N-芳基硫代酰胺与催化剂的摩尔比为1:0.1;N-烷基/N-芳基硫代酰胺与碱的摩尔比为1:(1.2~3);优选地,为1:3、1:2.5、1:2、1:1.5、1: 1.2;进一步优选地为1:2。
其中,所述的氧化剂为过硫酸钾、过硫酸钠、DDQ、醋酸碘苯、醋酸铜、 DTBP、TBHP、氧化银、碳酸银;优选地,为过硫酸钠。
其中,所述的催化剂为无水溴化钴、无水氯化钴、无水醋酸钴、乙酰丙酮钴 (Ⅱ)、三(2,4-戊二铜酸)钴(Ⅲ);优选地,为无水溴化钴。
其中,所述的碱为碳酸钾、磷酸钾、碳酸铯、氢氧化钾、叔丁醇钾、三乙胺、 DBU、DIPEA;优选地,为DBU。
其中,所述的有机溶剂为无水乙腈、无水四氢呋喃、无水甲苯、无水N, N-二甲基甲酰胺、无水二甲亚枫、无水1,1-二氯乙烷、无水1,4-二氧六环,优选地为无水乙腈。
其中,所述反应的温度为50℃或80℃;优选地,为50℃。
其中,所述反应的时间为1~2小时。
其中,本发明所述方法还包括后处理和柱色谱分离纯化步骤;其中,所述分离纯化是用乙酸乙酯/石油醚混合溶剂为洗脱剂进行柱层析分离,乙酸乙酯:石油醚混合溶剂的体积比为1:3~1:10。
在一个具体实施方式中,本发明所述方法包括:将式(1)所示的N-烷基/N- 芳基硫代酰胺和氧化剂、催化剂以及碱于有机溶剂中在50℃至80℃下发生分子内C(sp2)-H和C(sp3)-H的去氢偶联反应。TLC监测至原料反应完,过滤除去固体,滤液在减压下浓缩,残余物采用石油醚/乙酸乙酯的混合溶剂进行柱色谱分离,得到如式(2)所示的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物。
本发明提出的合成3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物的方法,是以式(1)所示的N-烷基/N-芳基硫代酰胺为原料,在催化剂,氧化剂和碱的存在下,在有机溶剂中,温度为50℃至80℃的条件下,发生分子内C(sp2)-H和 C(sp3)-H的去氢偶联反应,得到所述3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物;经过后处理和柱色谱分离纯化,得到纯化的3,3-二羧酸酯基-二氢吲哚-2- 硫酮类化合物。
本发明还提供了所述3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物在合成医药和光电材料中的应用。
本发明采用了易于制备的原料,通过发生分子内C(sp2)-H和C(sp3)-H的去氢偶联反应,简单高效地构建了3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物。该方法操作简单,反应快速高效,后处理方便,收率最高可至90%。本发明合成的该类3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物均为新化合物,是首次合成,可以应用于合成医药和光电材料等领域。
附图说明
图1-26分别为本发明实施例1-26合成的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物的核磁共振1H NMR、13C NMR图谱;
具体实施方式
以下结合具体实施例及附图,对本发明作进一步的详细说明,本发明的保护内容不局限于以下实施例。在不背离发明构思的精神和范围下,本领域技术人员能够想到的变化和优点都被包括在本发明中,并且以所附的权利要求书为保护范围。
实施例1
将2-(甲基(苯基)氨基甲酰基)丙二酸二甲酯(56.2mg,0.2mmol),无水溴化钴(4.4mg,0.02mmol),DBU(60.9mg,0.4mmol)和过硫酸钠(95.2mg, 0.4mmol)加入到反应瓶中,加入无水乙腈4mL,至于50℃下反应1小时,TLC 检测原料完全消耗,然后过滤除去不溶性固体,滤液在减压下浓缩,残留物硅胶柱层析纯化,得到纯产品40.4mg。其结构如式(2-1)所示。产率72%。核磁共振1H NMR、13C NMR图谱如图1所示,产物:1H NMR(500MHz,CDCl3)δ7.53 (d,J=7.4Hz,1H),7.44(td,J=7.8,1.0Hz,1H),7.22(t,J=7.6Hz,1H),7.00(d,J=7.9Hz,1H),3.79(s,6H),3.63(s,3H).13C NMR(126MHz,CDCl3)δ193.68,165.22, 145.85,130.23,127.95,125.67,124.78,109.83,75.13,53.87,31.79.
HRMS(EI)m/z calculated for C13H13NO4S[M]+279.0565,found 279.0567.
实施例2
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-甲氧基苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-2)所示。产率为77%。核磁共振1H NMR、13C NMR 图谱如图2所示,产物:1H NMR(600MHz,CDCl3)δ7.34(s,1H),7.23(d,J=8.0 Hz,1H),6.90(d,J=8.1Hz,1H),3.79(s,6H),3.61(s,3H),2.38(s,3H).13C NMR (151MHz,CDCl3)δ193.20,165.40,143.64,134.87,130.70,127.96,126.27,109.60, 75.09,53.88,31.88,21.19.
HRMS(EI)m/z calculated for C14H15NO5S[M]+309.0671,found 309.0674.
实施例3
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(甲基(对甲苯基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-3)所示。产率为79%。核磁共振1H NMR、13C NMR图谱如图3所示,产物:1H NMR(600MHz,CDCl3)δ7.34(s,1H),7.23(d,J=8.0Hz, 1H),6.90(d,J=8.1Hz,1H),3.79(s,6H),3.61(s,3H),2.38(s,3H).13C NMR(151 MHz,CDCl3)δ193.20,165.39,143.64,134.87,130.70,127.96,126.27,109.60, 75.10,53.88,31.88,21.19.
HRMS(EI)m/z calculated for C14H15NO4S[M]+293.0722,found 293.0720.
实施例4
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-((4- (N,4-二甲基苯基磺酰胺基)苯基)(甲基)氨基甲硫酰基)二甲基丙二酸酯, 50℃下反应时间1.5小时,所得到的产物如结构式(2-4)所示。产率为74%。核磁共振1H NMR、13C NMR图谱如图4所示,产物:1H NMR(600MHz,CDCl3) δ7.33(d,J=7.8Hz,2H),7.21(d,J=9.8Hz,1H),7.18(d,J=7.8Hz,2H),7.09(s, 1H),6.87(d,J=8.4Hz,1H),3.70(s,6H),3.54(s,3H),3.08(s,3H),2.35(s,3H).13C NMR(151MHz,CDCl3)δ193.66,164.79,144.75,143.81,138.50,133.01,129.60, 129.52,128.10,127.91,123.71,109.73,74.86,53.96,38.15,31.89,21.61.
HRMS(EI)m/z calculated for C21H22N2O6S2[M]+462.0919,found 462.0915.
实施例5
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-氟苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1.5小时,所得到的产物如结构式(2-5)所示。产率为69%。核磁共振1H NMR、13C NMR 图谱如图5所示,产物:1H NMR(600MHz,CDCl3)δ7.29(dd,J=7.6,2.6Hz,1H), 7.16(td,J=8.7,2.6Hz,1H),6.95(dd,J=8.7,4.0Hz,1H),3.81(s,6H),3.62(s, 3H).13C NMR(151MHz,CDCl3)δ193.11,164.75,161.20,159.58,142.00,129.23(d, J=9.2Hz),116.93(d,J=24.0Hz),114.01(d,J=26.0Hz),110.39(d,J=8.6Hz), 75.02,54.08,31.96.
HRMS(EI)m/z calculated for C13H12FNO4S[M]+297.0471,found 297.0469.
实施例6
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-氯苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间2小时,所得到的产物如结构式(2-6)所示。产率为65%。核磁共振1H NMR、13C NMR 图谱如图6所示,产物:1H NMR(600MHz,CDCl3)δ7.51(d,J=1.8Hz,1H),7.41 (dd,J=8.4,1.9Hz,1H),6.93(d,J=8.4Hz,1H),3.82(s,6H),3.61(s,3H).13C NMR (151MHz,CDCl3)δ193.22,164.71,144.47,130.50,130.33,129.16,126.20,110.58, 74.89,54.12,31.89.
HRMS(EI)m/z calculated for C13H12ClNO4S[M]+313.0176,found 313.0172.
实施例7
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-溴苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-7)所示。产率为65%。核磁共振1H NMR、13C NMR 图谱如图7所示,产物:1H NMR(600MHz,CDCl3)δ7.65(d,J=1.8Hz,1H),7.56 (dd,J=8.4,1.9Hz,1H),6.88(d,J=8.4Hz,1H),3.81(s,6H),3.60(s,3H).13C NMR(151MHz,CDCl3)δ193.16,164.71,144.95,133.22,129.45,128.91,117.85, 111.02,74.86,54.13,31.86.
HRMS(EI)m/z calculated for C13H12BrNO4S[M]+356.9670,found 356.9668.
实施例8
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-((4- 碘苯基)(甲基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间2小时,所得到的产物如结构式(2-8)所示。产率为42%。核磁共振1H NMR、13C NMR图谱如图8所示,产物:1H NMR(600MHz,CDCl3)δ7.74(d,J=1.4Hz,1H),7.68(dd, J=8.3,1.5Hz,1H),6.69(d,J=8.3Hz,1H),3.74(s,6H),3.52(s,3H).13C NMR (151MHz,CDCl3)δ193.15,164.72,145.65,139.12,134.41,129.73,111.44,87.87, 74.79,54.06,31.74.
HRMS(EI)m/z calculated for C13H12INO4S[M]+404.9532,found 404.9534.
实施例9
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-(乙氧基羰基)苯基)(甲基)氨基甲酰基)丙二酸二甲酯(70.6mg,0.2mmol),无水溴化钴(4.4mg,0.02mmol),DBU(76.1mg,0.5mmol),过硫酸钠(95.2 mg,0.4mmol)和乙腈(4mL),80℃下反应时间1小时,所得到的产物如结构式(2-9)所示。产率为63%。核磁共振1H NMR、13C NMR图谱如图9所示,产物:1H NMR(600MHz,CDCl3)δ8.10(dd,J=6.0,1.6Hz,2H),6.97(d,J=8.8 Hz,1H),4.31(q,J=7.1Hz,2H),3.74(s,6H),3.58(s,3H),1.33(t,J=7.1Hz,3H). 13C NMR(151MHz,CDCl3)δ194.75,165.74,164.80,149.31,132.59,127.83, 127.06,126.83,109.39,74.80,61.33,54.09,31.94,14.39.
HRMS(EI)m/z calculated for C16H17NO6S[M]+351.0777,found 351.0779.
实施例10
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((4-乙酰基苯基)(甲基)氨基甲酰基)丙二酸二甲酯(64.6mg,0.2mmol),无水溴化钴(4.4mg,0.02mmol),DBU(76.1mg,0.5mmol),过硫酸钠(95.2 mg,0.4mmol)和乙腈(4mL),80℃下反应时间1小时,所得到的产物如结构式(2-10)所示。产率为81%。核磁共振1H NMR、13C NMR图谱如图10所示,产物:1H NMR(600MHz,CDCl3)δ8.04(s,1H),8.02(d,J=8.4Hz,1H),7.00(d, J=8.3Hz,1H),3.74(s,6H),3.58(s,3H),2.54(s,3H).13C NMR(151MHz,CDCl3) δ196.38,194.85,164.77,149.44,133.82,131.60,128.10,125.71,109.49,74.80, 54.13,31.95,26.66.
HRMS(EI)m/z calculated for C15H15NO5S[M]+321.0671,found 321.0675.
实施例11
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((2-甲氧基苯基)(甲基)氨基甲酰基)丙二酸二甲酯(62.2mg,0.2mmol),无水溴化钴(4.4mg,0.02mmol),DBU(76.1mg,0.5mmol),过硫酸钠(95.2 mg,0.4mmol)和乙腈(4mL),80℃下反应时间2小时,所得到的产物如结构式(2-11)所示。产率为61%。核磁共振1H NMR、13C NMR图谱如图11所示,产物:1H NMR(600MHz,CDCl3)δ7.11–7.04(m,2H),6.91(d,J=8.0Hz,1H), 3.87(s,3H),3.84(s,3H),3.71(s,6H).13C NMR(151MHz,CDCl3)δ193.18,165.37, 145.02,133.86,129.55,125.68,117.97,113.72,75.31,56.08,53.87,35.73.
HRMS(EI)m/z calculated for C14H15NO5S[M]+309.0671,found 309.0668.
实施例12
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(甲基(邻甲苯基)氨基甲酰基)丙二酸二甲酯(59.0mg,0.2mmol),无水溴化钴 (4.4mg,0.02mmol),DBU(76.1mg,0.5mmol),过硫酸钠(95.2mg,0.4mmol) 和乙腈(4mL),80℃下反应时间1小时,所得到的产物如结构式(2-12)所示。产率为69%。核磁共振1H NMR、13C NMR图谱如图12所示,产物:1H NMR(600 MHz,CDCl3)δ7.29(d,J=7.4Hz,1H),7.09(d,J=7.6Hz,1H),7.02(t,J=7.5Hz, 1H),3.88(s,3H),3.71(s,6H),2.58(s,3H).13C NMR(151MHz,CDCl3)δ194.46,165.51,143.91,134.26,128.47,124.73,123.59,120.97,74.91,53.86,35.65,19.80.
HRMS(EI)m/z calculated for C14H15NO4S[M]+293.0722,found 293.0723.
实施例13
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((3-甲氧基苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-13)所示。产率为40%。核磁共振1H NMR、13C NMR图谱如图13所示,产物:1H NMR(600MHz,CDCl3)δ7.34(d,J=8.3Hz, 1H),6.64(d,J=8.3Hz,1H),6.48(s,1H),3.79(s,3H),3.72(s,6H),3.53(s,3H).13C NMR(151MHz,CDCl3)δ194.66,165.54,161.70,147.15,126.26,119.71,109.02, 97.39,74.52,55.80,53.84,31.83.
HRMS(EI)m/z calculated for C14H15NO5S[M]+309.0671,found 309.0674.
实施例14
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((3-氯苯基)(甲基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-14)所示。产率为20%。核磁共振1H NMR、13C NMR 图谱如图14所示,产物:1H NMR(500MHz,CDCl3)δ7.37(d,J=8.1Hz,1H),7.12 (dd,J=8.1,1.7Hz,1H),6.93(d,J=1.7Hz,1H),3.73(s,6H),3.53(s,3H).13C NMR(126MHz,CDCl3)δ194.13,164.85,146.93,136.32,126.54,126.10,124.62, 110.47,74.67,54.06,31.85.
HRMS(EI)m/z calculated for C13H12ClNO4S[M]+313.0176,found 313.0181.
实施例15
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-((3,5-二甲氧基苯基)(甲基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-15)所示。产率为90%。核磁共振1H NMR、13C NMR图谱如图15所示,产物:1H NMR(500MHz,CDCl3)δ6.21(d,J=1.8Hz, 1H),6.15(d,J=1.9Hz,1H),3.79(s,3H),3.75(s,3H),3.66(s,6H),3.50(s,3H).13C NMR(126MHz,CDCl3)δ195.57,164.56,163.06,156.64,148.18,107.82,94.45, 89.63,73.44,55.92,55.82,53.48,32.07.
HRMS(EI)m/z calculated for C15H17NO6S[M]+339.0777,found 339.0780.
实施例16
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(甲基(苯基)氨基甲酰基)丙二酸二乙酯,50℃下反应时间1小时,所得到的产物如结构式(2-16)所示。产率为77%。核磁共振1H NMR、13C NMR图谱如图 16所示,产物:1H NMR(600MHz,CDCl3)δ7.47(d,J=7.5Hz,1H),7.35(t,J=7.8 Hz,1H),7.14(t,J=7.6Hz,1H),6.93(d,J=7.9Hz,1H),4.19(q,J=7.1Hz,4H), 3.54(s,3H),1.19(t,J=7.1Hz,6H).13C NMR(151MHz,CDCl3)δ193.84,164.75, 145.86,130.10,128.15,125.69,124.65,109.81,75.22,62.91,31.76,13.89.
HRMS(EI)m/z calculated for C15H17NO4S[M]+307.0878,found 307.0875.
实施例17
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(甲基(苯基)氨基甲酰基)丙二酸二苄基酯,50℃下反应时间1.5小时,所得到的产物如结构式(2-17)所示。产率为70%。核磁共振1H NMR、13C NMR图谱如图17所示,产物:1H NMR(600MHz,CDCl3)δ7.35(d,J=7.5Hz,1H),7.31(t, J=7.8Hz,1H),7.23–7.19(m,6H),7.18–7.14(m,4H),7.06(t,J=7.6Hz,1H), 6.87(d,J=7.9Hz,1H),5.15–5.09(m,4H),3.50(s,3H).13C NMR(151MHz, CDCl3)δ193.30,164.50,145.94,134.91,130.26,128.51,128.34,128.00,127.75, 125.78,124.66,109.88,75.20,68.42,31.79.
HRMS(EI)m/z calculated for C25H21NO4S[M]+431.1191,found 431.1193.
实施例18
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(甲基(苯基)氨基甲酰基)丙二酸二异丙酯,50℃下反应时间2小时,所得到的产物如结构式(2-18)所示。产率为83%。核磁共振1H NMR、13C NMR图谱如图18所示,产物:1H NMR(600MHz,CDCl3)δ7.55(d,J=7.5Hz,1H),7.42(t,J= 7.8Hz,1H),7.21(t,J=7.6Hz,1H),6.99(d,J=7.9Hz,1H),5.16–5.08(m,2H), 3.61(s,3H),1.28(dd,J=14.0,6.3Hz,12H).13C NMR(151MHz,CDCl3)δ193.94, 164.22,145.86,129.97,128.32,125.71,124.49,109.74,75.22,70.65,31.70,21.42, 21.40.
HRMS(EI)m/z calculated for C17H21NO4S[M]+335.1191,found 335.1189.
实施例19
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(异丙基(苯基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1.5小时,所得到的产物如结构式(2-19)所示。产率为78%。核磁共振1H NMR、13C NMR图谱如图19所示,产物:1H NMR(600MHz,CDCl3)δ7.45(d,J=7.5Hz,1H),7.32(t, J=7.8Hz,1H),7.21(d,J=8.0Hz,1H),7.12(t,J=7.5Hz,1H),5.63(s,1H),3.71 (s,6H),1.48(d,J=7.1Hz,6H).13C NMR(151MHz,CDCl3)δ193.41,165.38, 143.96,129.80,128.46,125.77,124.29,111.75,75.25,53.85,48.78,18.51.
HRMS(EI)m/z calculated for C15H17NO4S[M]+307.0878,found 307.0882.
实施例20
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(己基(苯基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-20)所示。产率为75%。核磁共振1H NMR、13C NMR图谱如图 20所示,产物:1H NMR(600MHz,CDCl3)δ7.45(d,J=7.5Hz,1H),7.35(t,J=7.7 Hz,1H),7.13(t,J=7.5Hz,1H),6.93(d,J=7.9Hz,1H),4.10(t,J=7.5Hz,2H), 3.71(s,6H),1.74–1.66(m,2H),1.33(dd,J=13.7,6.6Hz,2H),1.30–1.20(m,4H), 0.81(t,J=6.3Hz,3H).13C NMR(151MHz,CDCl3)δ193.24,165.30,145.39, 130.17,128.18,125.66,124.60,110.03,75.23,53.84,44.91,31.45,26.49,26.00, 22.54,14.00.
HRMS(EI)m/z calculated for C18H23NO4S[M]+349.1348,found 349.1351.
实施例21
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2- ((3-甲氧基丙基)(苯基)氨基甲酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-21)所示。产率为62%。核磁共振1H NMR、13C NMR图谱如图21所示,产物:1H NMR(500MHz,CDCl3)δ7.45(dd,J=7.5,0.5 Hz,1H),7.36(td,J=7.9,1.1Hz,1H),7.13(td,J=7.6,0.7Hz,1H),7.04(d,J=8.0 Hz,1H),4.21(t,J=7.0Hz,2H),3.72(s,6H),3.32(t,J=5.8Hz,2H),3.25(s,3H), 2.04–1.97(m,2H).13C NMR(126MHz,CDCl3)δ193.36,165.29,145.66,130.23, 128.00,125.59,124.65,110.18,75.20,69.19,58.61,53.88,42.04,26.27.
HRMS(EI)m/z calculated for C16H19NO5S[M]+337.0984,found 337.0981.
实施例22
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(苄基(苯基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-22)所示。产率为82%。核磁共振1H NMR、13C NMR图谱如图22所示,产物:1H NMR(600MHz,CDCl3)δ7.53(d,J=7.5Hz,1H),7.33–7.24 (m,6H),7.17(t,J=7.6Hz,1H),6.84(d,J=8.0Hz,1H),5.46(s,2H),3.81(s,6H). 13C NMR(151MHz,CDCl3)δ194.60,165.27,145.15,133.97,130.22,128.95, 127.97,127.88,126.91,125.53,124.81,110.79,75.34,53.94,48.15.
HRMS(EI)m/z calculated for C19H17NO4S[M]+355.0878,found 355.0876.
实施例23
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(苄基(4-甲氧基苯基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间1小时,所得到的产物如结构式(2-23)所示。产率为68%。核磁共振1H NMR、13C NMR 图谱如图23所示,产物:1H NMR(600MHz,CDCl3)δ7.25–7.16(m,5H),7.04(d, J=2.5Hz,1H),6.73(dd,J=8.7,2.5Hz,1H),6.65(d,J=8.7Hz,1H),5.35(s,2H), 3.74(s,6H),3.69(s,3H).13C NMR(151MHz,CDCl3)δ193.41,165.25,157.60, 138.65,134.00,129.22,128.93,127.87,126.92,115.08,112.16,111.25,75.37,55.88, 53.95,48.27.
HRMS(EI)m/z calculated for C20H19NO5S[M]+385.0984,found 385.0980.
实施例24
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(苄基(4-氯苯基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间2小时,所得到的产物如结构式(2-24)所示。产率为68%。核磁共振1H NMR、13C NMR图谱如图24所示,产物:1H NMR(600MHz,CDCl3)δ7.44(d,J=2.0Hz,1H),7.23 (t,J=7.2Hz,2H),7.21–7.16(m,4H),6.67(d,J=8.5Hz,1H),5.35(s,2H),3.76(s, 6H).13C NMR(151MHz,CDCl3)δ194.12,164.74,143.72,133.59,130.54,130.29, 129.22,129.03,128.04,126.85,126.05,111.50,75.10,54.16,48.20.
HRMS(EI)m/z calculated for C13H12ClNO4S[M]+313.0176,found 313.0172.
实施例25
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(苄基(4-溴苯基)氨基甲硫酰基)丙二酸二甲酯,50℃下反应时间2小时,所得到的产物如结构式(2-25)所示。产率为46%。核磁共振1H NMR、13C NMR图谱如图25所示,产物:1H NMR(500MHz,CDCl3)δ7.57(d,J=1.9Hz,1H),7.33 (dd,J=8.4,1.9Hz,1H),7.25–7.15(m,5H),6.62(d,J=8.5Hz,1H),5.34(s,2H), 3.76(s,6H).13C NMR(126MHz,CDCl3)δ194.03,164.73,144.18,133.55,133.16, 129.50,129.03,128.76,128.03,126.83,117.91,111.93,75.05,54.17,48.15.
HRMS(EI)m/z calculated for C19H16BrNO4S[M]+432.9983,found432.9980.
实施例26
本实施例实验方法基本与实施例1相同,本实施例中所采用的原料为2-(苄基(4-(乙氧基羰基)苯基)氨基甲硫酰基)丙二酸二甲酯(85.8mg,0.2mmol),无水溴化钴(4.4mg,0.02mmol),DBU(76.1mg,0.5mmol),过硫酸钠(95.2 mg,0.4mmol)和乙腈(4mL),80℃下反应时间2小时,所得到的产物如结构式(2-26)所示。产率为59%。核磁共振1H NMR、13C NMR图谱如图26所示,产物:1H NMR(600MHz,CDCl3)δ8.11(s,1H),7.96(d,J=8.3Hz,1H),7.26– 7.22(m,2H),7.21–7.17(m,3H),6.80(d,J=8.4Hz,1H),5.40(s,2H),4.28(q,J= 7.1Hz,2H),3.77(s,6H),1.30(t,J=7.1Hz,3H).13C NMR(151MHz,CDCl3)δ 195.57,165.70,164.83,148.61,133.58,132.50,129.03,128.04,127.88,127.10, 126.82,126.71,110.27,75.01,61.30,54.12,48.19,14.37.
HRMS(EI)m/z calculated for C22H21NO6S[M]+427.1090,found427.1094。
Claims (6)
1.一种3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物的合成方法,其特征在于,包括:在有机溶剂中,在50℃至80℃温度条件下,式(1)所示的N-烷基/N-芳基硫代酰胺和氧化剂、催化剂以及碱发生分子内C(sp2)-H和C(sp3)-H的去氢偶联反应,得到如式(2)所示的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物;所述反应过程如反应式(Ⅰ)所示:
其中,
R1为氢、烷基、酯基、酰基、卤素、烷氧基、磺酰胺基;
R2为烷基、苄基、有取代的烷基;
R3、R4独自为烷基、苄基;
所述的氧化剂为过硫酸钾、过硫酸钠、DDQ、醋酸碘苯、醋酸铜、DTBP、TBHP、氧化银、碳酸银;
所述的催化剂为无水溴化钴、无水氯化钴、无水醋酸钴、乙酰丙酮钴(Ⅱ)、三(2,4-戊二铜酸)钴(Ⅲ);
所述的碱为碳酸钾、磷酸钾、碳酸铯、氢氧化钾、叔丁醇钾、三乙胺、DBU、DIPEA。
2.根据权利要求1所述的合成方法,其特征在于,所述式(1)所示的N-烷基/N-芳基硫代酰胺与氧化剂的摩尔比为1:2;N-烷基/N-芳基硫代酰胺与催化剂的摩尔比为1:0.1;N-烷基/N-芳基硫代酰胺与碱的摩尔比为1:(1.2~3)。
3.根据权利要求1所述的合成方法,其特征在于,所述的有机溶剂为无水乙腈、无水四氢呋喃、无水甲苯、无水N,N-二甲基甲酰胺、无水二甲亚砜、无水1,1-二氯乙烷、无水1,4-二氧六环。
4.根据权利要求1所述的合成方法,其特征在于,所述反应的时间为1~2小时。
5.根据权利要求1所述的合成方法,其特征在于,所述方法还包括后处理和柱色谱分离纯化步骤;其中,所述分离纯化是用乙酸乙酯/石油醚混合溶剂为洗脱剂进行柱层析分离,乙酸乙酯:石油醚混合溶剂的体积比为1:3~1:10。
6.根据权利要求1所述的合成方法,其特征在于,所述方法具体包括:将式(1)所示的N-烷基/N-芳基硫代酰胺和氧化剂、催化剂以及碱于有机溶剂中在50℃至80℃下发生分子内C(sp2)-H和C(sp3)-H的去氢偶联反应;TLC监测至原料反应完,过滤除去固体,滤液在减压下浓缩,残余物采用石油醚/乙酸乙酯的混合溶剂进行柱色谱分离,得到如式(2)所示的3,3-二羧酸酯基-二氢吲哚-2-硫酮类化合物。
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