Synthesis of 2-Imino-1,2-dihydroquinolines via Copper Catalysis

A mild three-component method for the synthesis of 2-imino-1,2-dihydroquinoline compounds has been successfully developed.In the presence of CuCl, various terminal alkynes, sulfonyl azides and 2-aminobenzaldehydes were coupled.When changing the type of substrate alkyne, controlled synthesis of dihydroquinoline and sulfonyl amidine compounds were achieved.