Stereoselective Synthesis of Polyfunctional Tetrasubstituted Alkenyl Sulfides via a Carbocupration of Alkynyl Sulfides with Aryl and Benzylic Diorganozincs
作者:Paul Knochel、Cora Dunst、Albrecht Metzger、Elena Zaburdaeva
DOI:10.1055/s-0030-1260210
日期:2011.11
A general method for the synthesis of tetrasubstituted alkenyl sulfides has been developed by the carbocupration of alkynyl sulfides with functionalized diorganozinc reagents in the presence of CuCNË2LiCl. The intermediate alkenylcopper reagents readily react with various electrophiles furnishing a broad range of highly functionalized alkenes with excellent stereoselectivity (E/Z 93:7-99:1).
在 CuCNË2LiCl 的存在下,炔基硫化物与官能化二甘锌试剂发生羰基化反应,从而开发出一种合成四取代烯基硫化物的通用方法。中间体烯基铜试剂很容易与各种亲电体发生反应,从而以优异的立体选择性(E/Z 93:7-99:1)生成多种高度官能化的烯烃。