Copper-Promoted Tandem Reaction of Azobenzenes with Allyl Bromides via N═N Bond Cleavage for the Regioselective Synthesis of Quinolines

A copper-promoted tandem reaction of a variety of azobenzenes and allyl bromides via N═N bond cleavage to regioselectively construct quinoline derivatives has been developed. The azobenzenes act as not only construction units but also an oxidant for quinoline formation.