Synthesis of 2-trifluoromethyl indoles via visible-light induced intramolecular radical cyclization†
Abstract
A visible-light induced intramolecular radical cyclization of N-[2-(alkynyl)phenyl]trifluoroacetimidoyl chlorides is described. The reaction allows the rapid construction of diverse 2-trifluoromethyl-3-acylindoles in a sequential C–C and C–O bond formation process under mild conditions.