Copper‐Catalyzed One‐Pot Arylation and Cyclization of Diaryliodonium Salts Derived from o‐Iodoanilines for Indoloindoles Syntheses

One‐pot synthesis of various indolo[2,3‐b]indoles has been accomplished from a copper‐catalyzed transformation of easily accessible 2‐(substituted‐amino)aryl)(mesityl)iodonium salts and indole derivatives. Reaction offers great functional group toleration, providing a series of indolo[2,3‐b]indole derivatives in good yields. Additionally, intramolecular cyclization of 2‐(substituted‐amino)aryl)(mesityl)iodonium salts in the presence of copper‐catalyst provided direct access to benzoxazole derivatives.Chung Whan Lee was nominated to be part of this collection by EurJOC Board Member Sanghee Kim.