Stereoselective Silylcupration of Conjugated Alkynes in Water at Room Temperature
作者:Roscoe T. H. Linstadt、Carl A. Peterson、Daniel J. Lippincott、Carina I. Jette、Bruce H. Lipshutz
DOI:10.1002/anie.201311035
日期:2014.4.14
Micellar catalysis enables copper‐catalyzed silylcupration of a variety of electron‐deficient alkynes, thereby providing access to isomerically pure E‐ or Z‐β‐silyl‐substituted carbonyl derivatives. These reactions take place in minutes, afford high yields and stereoselectivity, and are especially tolerant of functional groups present in the substrates. The aqueous reaction medium has been successfully
胶束催化使铜能够催化多种缺电子的炔烃,从而获得异构化的纯E-或Z -β-甲硅烷基取代的羰基衍生物。这些反应在几分钟内发生,提供高产率和立体选择性,并且特别耐受底物中存在的官能团。水性反应介质已经成功地循环了几次,并且该方法的底物/催化剂比为10,000:1。