Copper-Catalyzed Denitrogenative Transannulation Reaction of Pyridotriazoles: Synthesis of Imidazo­[1,5‑<i>a</i>]­pyridines with Amines and Amino Acids

The copper-catalyzed aerobic oxidative synthesis of imidazo­[1,5-<i>a</i>]­pyridines via cascade denitrogenative transannulation reaction of pyridotriazoles with benzylamines with good functional group tolerance is developed. The present methodology is also applicable to amino acids to obtain imidazo­[1,5-<i>a</i>]­pyridines via decarboxylative oxidative cyclization