Metal‐Free Visible‐Light Promoted Radical Cyclization to Access Perfluoroalkyl‐Substituted Benzimidazo[2,1‐<i>a</i>]isoquinolin‐6(5<i>H</i>)‐ones and Indolo[2,1‐<i>a</i>]isoquinolin‐6(5<i>H</i>)‐ones

Abstract

Abstract A metal‐free visible‐light‐induced cyclization procedure was developed for the rapid synthesis of perfluoroalkyl‐substituted benzimidazo[2,1‐ a ]isoquinolin‐6(5 H )‐ones and perfluoroalkyl‐substituted indolo[2,1‐ a ]isoquinolin‐6(5 H )‐ones under mild reaction conditions. In this procedure, the formation of electron‐donor‐acceptor (EDA) complex is critical for the visible‐light promoted process to avoid the utilization of external photocatalysts. magnified image