One-pot Combinatorial Synthesis of Benzo[4,5]imidazo-[1,2-a]thiopyrano[3,4-d]pyrimidin-4(3H)-one Derivatives

摘要

A series of novel fused tetracyclic benzo[4,5]imidazo[1,2-a]thiopyrano[3,4-d]pyrimidin-4(3H)-one derivatives were synthesized via the reaction of aryl aldehyde, 2H-thiopyran-3,5(4H,6H)-dione, and 1H-benzo[d]imidazol-2-amine in glacial acetic acid. This protocol features mild reaction conditions, high yields and short reaction time.