Highly Efficient InBr3 Catalyzed Michael Addition of Indoles to α,β-Unsaturated Esters
作者:Ping Liu、Wei Chen、Kai Ren、Lei Wang
DOI:10.1002/cjoc.201190011
日期:2010.12
A highlyefficient synthetic strategy toward Michaeladdition of indoles to α,β‐unsaturated esters has been developed using Lewis acid InBr3 as catalyst. The reactions generated 3‐substituted indoles in high yields with excellent regio‐selectivity in the presence of catalytic amount of InBr3 under mild reaction conditions. The method is simple, efficient and practical.