Ammonium Acetate Promoted Rapid and Efficient Synthesis of gamma-Benzopyranones and 3,4-Dihydropyrimidin-2(1H)-ones/thiones Under Solvent-free Conditions: A Parallel Scrutiny of Microwave Irradiation versus Conventional Heating

摘要

A simple and highly efficient approach for the synthesis of gamma-Benzopyranones and 3,4-Dihydropyrimidin- 2(1H)-ones/thiones using ammonium acetate as a promoter under thermal as well as microwave irradiation using solvent-free conditions has been demonstrated.