Synthesis of Carbazolylamines through Brønsted Acid‐Catalyzed Direct Electrophilic Aminations

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 determine by the selection of catalysts and molar ratio of starting materials. The efficiency of this protocol was showcased by diverse carbazolylamines and indolocarbazolylamines assembly. The synthetic value of this methodology is fully illustrated by the late‐stage functionalization of a series of natural products.