A Metal‐Free C−H Amination‐Based Strategy for N‐Amino Indole Synthesis

Abstract An oxidative cyclization of electron‐rich α‐arylhydrazones promoted by phenyliodine bis(trifluoroacetate) (PIFA) has been accomplished. This metal‐free, chemoselective transformation allows to obtain synthetically and medicinally important N ‐amino‐1 H ‐indoles, obviating the need for pre‐functionalization of substrates.