Organo-Catalyzed Regio- and Geometry-Specific Construction of β-Hydroxyl-α-vinyl Carboxylic Esters: Substrate Scope, Mechanistic Insights, and Applications
作者:Yonghai Chai、JinJin Zhou、Yanbin Wu、Yingle Feng、Panru Wang、Yange Chen、Xinying Wang、Beibei Zhao、Qi Zhang
DOI:10.1021/acs.joc.8b01510
日期:2018.9.7
A green protocol has been developed for the synthesis of β-hydroxyl-α-vinyl carboxylic esters using aldehydes and α,β-unsaturated esters bearing an activated γ proton as starting materials under Morita–Baylis–Hillman (MBH) reaction conditions. Diverse β-hydroxyl-α-vinyl carboxylic esters have been synthesized regiospecifically in moderate to good yields with only E geometric selectivity. Other remarkable
在Morita-Baylis-Hillman(MBH)反应条件下,已经开发了一种绿色方案,用于合成醛-α-β-不饱和酯和带有活化γ质子的α,β-不饱和酯,以合成β-羟基-α-乙烯基羧酸酯。已经以中等至良好的产率,仅E几何选择性以区域特异性合成了不同的β-羟基-α-乙烯基羧酸酯。其他显着特征包括原子效率,环境友好性和温和的反应条件。此外,反应产物可以容易地转化为四氢呋喃,二氢呋喃和呋喃衍生物。