(2S)-1-[(2-噻吩基)苯氧基]-2-3-环氧丙烷的两步合成法
Two Steps Synthesis of(2S)-1-[(2-thienyl)phenoxy]-2-3-propylene oxide
张峰 1张雷刚 1林兴龙 1黄正伟 1解鸣涛 1张叶青1
作者信息
- 1. 浙江永太科技股份有限公司,浙江临海 317016
- 折叠
摘要
目的:以廉价、易得的(R)-环氧氯丙烷为起始原料构筑手性中心,合成(2S)-1-[(2-噻吩基)苯氧基]-2-3-环氧丙烷.方法:(R)-环氧氯丙烷与 2-(噻吩-2-基)苯酚在弱碱性条件下反应生成中间体,再在强碱性条件下环合生成(2S)-1-[(2-噻吩基)苯氧基]-2-3-环氧丙烷.结果:经过两步比较温和的反应,生成双聚合杂质和手性异构体纯度约 0.30%的粗品,经过重结晶得到高纯度目标化合物(双聚合杂质纯度 0.02%,手性异构体纯度 0.10%,单一杂质纯度＜0.1%).结论:(R)-环氧氯丙烷为起始原料构筑手性中心,产物容易分离、提纯,为(2S)-1-[(2-噻吩基)苯氧基]-2-3-环氧丙烷的工业化合成路径提供了有益参考.
Abstract
Objective:To synthesize(2S)-1-[(2-thiophenyl)phenoxy]-2-3-propane oxide from cheap and readily available(R)-epichlorohydrin.Methods:(R)-epichlorohydrin reacts with 2-(thiophene-2-yl)phenol to form intermediate under weak base condition,and then cycles to form(2S)-1-[(2-thiophenyl)phenoxy]-2-3-propane oxide under strong base condition.Results:after two steps of relatively mild reaction,a crude product with a bipolymeric impurity and chiral isomer content of about 0.30%is generated,and a high-purity target compound(bipolymeric impurity content of 0.02%,chiral isomer content of 0.10%,and single impurity content of＜0.1%)is obtained by recrystallization.Conclusion:(R)-epichlorohydrin is used as the starting material to construct chiral center,and the product can be separated and purified easily,which provides a useful reference for the industrial synthesis of(2S)-1-[(2-thiophenyl)phenoxy]-2-3-propane oxide.
关键词
2-(噻吩-2-基)苯酚/(R)-环氧氯丙烷/(2S)-1-[(2-噻吩基)苯氧基]-2-3-环氧丙烷/两步合成Key words
2-(thiophen-2-yl)phenol/(R)-epichlorohydrin/(2S)-1-[(2-thienyl)phenoxy]-2-3-propylene oxide/two steps synthesis引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据