Synthesis of Carbazolylamines through Brønsted Acid‐Catalyzed Direct Electrophilic Aminations

Abstract A Brønsted acid catalyzed direct and dual C−H amination of carbazoles and indolocarbazoles with N ‐Ts iminoquinone acetal is reported. It is characterized that the mentioned C−H amination was determined by the selection of catalysts and the molar ratio of the starting materials. The efficiency of this protocol was showcased by diverse carbazolylamine and indolocarbazolylamine assemblies. The late‐stage functionalization of a series of natural products fully illustrates the synthetic value of this methodology.