CN101613336A - 一种3位取代的4-羟基香豆素衍生物的制备方法 - Google Patents
一种3位取代的4-羟基香豆素衍生物的制备方法 Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims abstract description 10
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- BVJSUAQZOZWCKN-UHFFFAOYSA-N 4-Hydroxybenzyl alcohol Natural products OCC1=CC=C(O)C=C1 BVJSUAQZOZWCKN-UHFFFAOYSA-N 0.000 claims abstract description 5
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- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical class [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims abstract description 4
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
- LYGJENNIWJXYER-BJUDXGSMSA-N nitromethane Chemical group [11CH3][N+]([O-])=O LYGJENNIWJXYER-BJUDXGSMSA-N 0.000 claims description 2
- 125000005504 styryl group Chemical group 0.000 claims description 2
- 238000006555 catalytic reaction Methods 0.000 abstract description 7
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- QILSFLSDHQAZET-UHFFFAOYSA-N diphenylmethanol Chemical compound C=1C=CC=CC=1C(O)C1=CC=CC=C1 QILSFLSDHQAZET-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种3位取代的4-羟基香豆素衍生物的制备方法。它是把4-羟基香豆素和苄醇溶解在有机溶剂中,在分子碘催化下,在温度为50~80℃反应1~12小时,反应完毕,加入饱和亚硫酸钠溶液,用乙酸乙酯萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得高产率的3位取代的4-羟基香豆素衍生物。本发明反应条件温和,成本廉价,产率高,工艺简单,操作便捷。
Description
技术领域
本发明涉及香豆素衍生物制备方法,尤其涉及3位烷基化的4-羟基香豆素衍生物的制备方法。
背景技术
香豆素衍生物在天然产物中是一种重要的结构成分,拥有广泛的生理活性,例如,抗人类免疫缺陷病毒、抗疟药物、抗血凝剂等,在医药方面有重要的经济价值,尽管3取代4-羟基香豆素衍生物的合成方法已经有很多报道,但很多方法是通过碱来烷基化或以卤化物、硼酸作为原料通过金属铅催化形成碳-碳键。例如,J.Org.Chem.2007,72,3293-3301中报道了苯硼酸应用醋酸铅催化使4-羟基香豆素的3位烷基化。同时报道了一些用强的Lewis酸催化4-羟基香豆素和苄醇的反应,例如近期出现的三氟乙酸镱,强酸性阳离子交换树脂AMBERLITE IR-120等,因此发展一种新颖、高效的催化剂用于4-羟基香豆素的3位烷基化是一项非常重要且有现实意义的工作。
发明内容
本发明的目的是提供一种工艺简单、操作便捷、高产率的制备3位取代的4-羟基香豆素衍生物的方法。
本发明的3位取代的4-羟基香豆素衍生物的制备方法,其步骤是:把4-羟基香豆素和苄醇溶解在有机溶剂中,以分子碘为催化剂,在温度为50~80℃反应1~12小时,加入饱和亚硫酸钠溶液,用乙酸乙酯萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得3位取代的4-羟基香豆素衍生物;4-羟基香豆素和苄醇的摩尔当量比例1∶1.0~1.2;催化剂分子碘的用量为4-羟基香豆素的0.08-0.20摩尔当量,亚硫酸钠与分子碘的摩尔比为1~2∶1;
反应式为:
其中R1=H、卤素、甲氧基或乙氧基,R2=H、卤素、烷基;R3=烷基、苯乙烯基、苯乙炔基;其中烷基为CnH2n+1,n=1~4。
上述的有机溶剂为硝基甲烷或硝基乙烷。
本发明与已有的合成方法相比较,具有以下优点:
1)使用非金属碘作为催化剂,成本低廉;
2)反应条件温和,不用隔绝空气;
3)反应通用性强,操作简单,有良好的应用前景。
具体实施方法
以下实施例将有助于理解本发明,但不限于本发明的内容:
实施例1
将4-羟基香豆素(10毫摩尔)和1-苯基乙醇(12毫摩尔)溶解在硝基甲烷中,在碘分子(1毫摩尔)催化下温度50℃反应12小时,结束反应,加入饱和亚硫酸钠溶液20毫升,用乙酸乙酯20×2毫升萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得白色3-(1-苯乙基)-4-羟基香豆素固体,产率74%。
产物物性数据为:mp:204-205℃;IR(KBr):3256,1672,1626,1496,1395,1215,1167,752cm-1;1H-NMR(400MHz,CDCl3):δ7.7(d,J=8.4Hz,1H),7.52-7.49(m,3H),7.44-7.40(t,J=7.2Hz,2H),7.34-7.21(m,3H),6.42(s,br,1H),4.74(q,J=6.4Hz,1H),1.68(d,J=6.4Hz,3H)ppm;13C-NMR(100MHz,CDCl3):δ163.6,159.8,152.4,141.6,131.8,129.6,127.7,127.3,123.8,122.9,116.3,116.0,110.0,34.5,16.5 ppm;MS(ESI):m/z 265([M-1]-).
实施例2
将4-羟基-6-氯香豆素(10毫摩尔)和(E)-1,3-二苯基-2-丙烯-1-醇(12毫摩尔)溶解在硝基甲烷中,在碘分子(0.8毫摩尔)催化下温度80℃反应1小时,结束反应,加入饱和亚硫酸钠20毫升,用乙酸乙酯20×2毫升萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得,3-(1,3-二苯基烯丙基)-4-羟基-6-氯-香豆素产率79%。
产物物性数据为:white solid;mp:159-161℃;IR(KBr):3326,3026,1673,1621,1566,1488,1379,1269,1199,1156,1116,965,745,696cm-1;1H-NMR(400MHz,CDCl3):δ7.76(d,J=6.8Hz,1H),7.48(dd,J=2.4Hz,J=8.8Hz,1H),7.41-7.25(m,11H),7.08(s,br,1H),6.73(dd,J=6.0Hz,J=16.4Hz,1H),6.51(d,16.4Hz,1H),5.44(d,6.4Hz,1H)ppm;13C-NMR(100MHz,CDCl3):δ162.7,159.8,151.0,139.2,135.9,134.1,132.1,129.5,129.4,128.7,128.1,128.0,127.8,127.7,126.5,122.8,117.9,117.0,107.3,44.0ppm;MS(ESI):m/z 388([M-1]-),Anal.Calcd forC24H17ClO3:C 74.13,H 4.41;found:C 74.43,H 4.30.
实施例3
将4-羟基-6-乙氧基香豆素(10毫摩尔)和二苯甲醇(12毫摩尔)溶解在硝基乙烷中,在碘分子(2毫摩尔)催化下温度50℃反应4小时,结束反应,加入饱和亚硫酸钠20毫升,用乙酸乙酯20×2毫升萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得3-(二苯甲基)-4-羟基-6-乙氧基-香豆素,产率70%。
产物物性数据为:white solid;mp:222-223℃;IR(KBr):3384,1697,1628,1585,1495,1443,1396,1272,1251,1228,1180,1043,703cm-1;1H-NMR(400MHz,CDCl3):δ7.40-7.23(m,11H),7.14-7.09(m,2H),6.25(s,1H),5.99(s,1H),4.01(q,J=6.8Hz,2H),1.41(t,J=6.8Hz,3H)ppm;13C-NMR(100MHz,CDCl3):δ163.4,160.5,155.2,147.1,140.0,129.4,128.7,127.7,120.9,117.5,116.1,107.8,105.4,64.0,47.3,14.7ppm;MS(ESI):m/z 371([M-1]-),Anal.Calcd for C24H20O4:C 77.40,H 5.41;found:C 77.31,H 5.40.
实施例4
将4-羟基基香豆素(10毫摩尔)和1,3-二苯基-2-丙炔-1-醇(12毫摩尔)溶解在硝基乙烷中,在碘分子(1毫摩尔)催化下温度50℃反应1小时,结束反应,加入饱和亚硫酸钠20毫升,用乙酸乙酯20×2毫升萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得3-(1,3-二苯基炔丙基)-4-羟基香豆素,产率80%。
产物物性数据为:white solid;mp:157-158℃;IR(KBr):3337,3058,1668,1613,1567,1492,1209,756,717,693cm-1;1H-NMR(400MHz,CDCl3):δ8.40(s,br,1H),7.86(dd,J=1.6Hz,J=8.4Hz,1H),7.61(d,J=7.6Hz,2H),7.56-7.50(m,3H),7.38-7.25(m,8H),5.79(s,1H)ppm;13C-NMR(100MHz,CDCl3):δ162.6,161.1,152.6,138.5,132.3,131.8,129.1,129.0,128.5,127.7,127.1,124.0,123.4,121.3,116.4,115.9,104.9,87.8,86.4,33.3 ppm;MS(ESI):m/z 351([M-1]-).
Claims (2)
1.一种3位取代的4-羟基香豆素衍生物的制备方法,其步骤是:把4-羟基香豆素和苄醇溶解在有机溶剂中,以分子碘为催化剂,在温度为50~80℃反应1~12小时,加入饱和亚硫酸钠溶液,用乙酸乙酯萃取,有机相无水硫酸钠干燥,减压浓缩,随后通过柱层析纯化,获得3位取代的4-羟基香豆素衍生物。4-羟基香豆素和苄醇的摩尔当量比例1∶1.0~1.2;催化剂分子碘的用量为4-羟基香豆素的0.08-0.20摩尔当量,亚硫酸钠与分子碘的摩尔比为1~2∶1;
反应式为:
其中R1=H、卤素、甲氧基或乙氧基,R2=H、卤素、烷基;R3=烷基、苯乙烯基、苯乙炔基;其中烷基为CnH2n+1,n=1~4。
2.根据权利要求1所述的3位取代的4-羟基香豆素衍生物的制备方法,其特征在于所说的有机溶剂为硝基甲烷或硝基乙烷。
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