Copper‐Catalyzed Radical Sulfonylation of N‐Propargylindoles with Concomitant 1,2‐Aryl Migration

A novel copper‐catalyzed cascade radical sulfonylation of N‐propargyl‐substituted indoles with concomitant 1,2‐aryl migration was described. The protocol, which has good functional‐group tolerance, provides practical, versatile and atom‐economical method of accessing a new class of fascinating 2‐sulfonated pyrrolo[1,2‐α]indole derivatives in moderate to good yields through the formation of the new C−S, C−C and C=O bonds in a one‐step.