Mild and Efficient Michael Addition of Activated Olefins to Indoles using TBAB as a Catalyst: Synthesis of 3‐Substituted Indoles

Abstract A mild and efficient method for the synthesis of 3‐substituted indoles by treatment of activated olefins with indoles using TBAB as a catalyst afforded the corresponding products in excellent yields. The method is general for the preparation of a wide variety of 3‐substituted indoles.