Ionic‐Liquid‐Catalyzed Synthesis of Imines, Benzimidazoles, Benzothiazoles, Quinoxalines and Quinolines through C−N, C−S, and C−C Bond Formation

The tetramethylammonium-hydroxide-catalyzed oxidative coupling of amines and alcohols has been described for the synthesis of several heterocycles under metal-free conditions by utilizing oxygen from air as the terminal oxidant.