BF3·Et2O promoted conjugate addition of ethanethiol to electron-deficient alkynes
作者:Qing Fa Zhou、Xue Ping Chu、Shen Zhao、Tao Lu、Wei Fang Tang
DOI:10.1016/j.cclet.2012.04.008
日期:2012.6
Abstract An effective method for the synthesis of vinyl thioethers through the conjugate addition of ethanethiol to electron-deficient alkynes promoted by BF 3 ·Et 2 O has been developed. Electron-deficient internal alkynes react with ethanethiol in this system to yield mainly Z -isomer of vinyl thioether adducts, while electron-deficient terminal alkynes afford mainly E -isomer of vinyl thioether
摘要开发了一种有效的方法,该方法是通过将乙硫醇共轭加成到BF 3·Et 2 O促进的电子缺陷型炔烃中来合成乙烯基硫醚。缺电子的内部炔烃在该体系中与乙硫醇反应,主要生成乙烯基硫醚加合物的Z-异构体,而缺电子的末端炔烃主要提供乙烯基硫醚加合物的E-异构体。