Copper-Catalyzed Aerobic Oxidation and Oxygenation of Anilines and Acetaldehydes with Dioxygen for the Concise Synthesis of 2-Aroylquinolines

A concise and efficient aerobic oxidation and oxygenation approach for the construction of 2-aroylquinolines has been developed through copper-catalyzed annulation of anilines, acetaldehydes, and dioxygen. 2,2,6,6-Tetramethylpiperidine-1-oxyl was employed to direct the selectivity toward the desired 2-aroyl products. Molecular oxygen was used in this transformation as an environmentally benign source of...