Asymmetric Brønsted Acid-Catalyzed Friedel-Crafts Reactions of Indoles with Cyclic Imines - Efficient Generation of Nitrogen-Substituted Quaternary Carbon Centers
作者:Magnus Rueping、Sadiya Raja、Alberto Núñez
DOI:10.1002/adsc.201000952
日期:2011.3.7
A new enantioselective Brønsted acid‐catalyzed Friedel–Crafts reaction of indole with cyclicimines has been develeoped. This organocatalytic reaction provides for the first time optically active indolindolinone derivatives in high yields and with excellent enantioselectivities (up to 91% ee) under mild reaction conditions.