Michael Addition of Indoles to Enones Catalyzed by a Cationic Iron Salt
作者:Takashi Nishikata、Tsukasa Inishi、Goki Hirata
DOI:10.1055/s-0040-1705997
日期:2021.3
Indoles are one of the most valuable nucleophiles in Michaeladditionscatalyzed by a proper Lewis acid. In this paper, we found that a cationic iron salt is effective to carry out the Michaeladdition of indoles. β-Mono- and disubstituted enones reacted smoothly with indoles under our conditions. The cationic iron catalyst is very active, and the maximum TON was up to 425. Moreover, cationic iron-catalyzed