Palladium-Catalyzed Intramolecular C–H Amination\nvia Oxidative Coupling on Indole\nDerivatives: Access to 11<i>H</i>‑Benzo[4,5]imidazo[1,2‑<i>a</i>]indoles

A novel palladium-catalyzed intramolecular C–H\namination\nvia oxidative coupling exploiting inactivated N-substituted aryl amines\non indoles for the one-pot synthesis of novel 11<i>H</i>-benzo[4,5]imidazo[1,2-<i>a</i>]indole derivatives is reported.\nThe optimized reaction conditions accommodated a wide range of electronic\nvariations on both the indole and the pendant aryl amine ring, resulting\nin products with good to excellent yields.