2015•Letters in Organic ChemistryRequires access

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

Nitin M. Thorat, Rohit A. Dengale, Shankar R. Thopate, Sandeep Vasantrao Rohokale

Abstract

A simple and highly efficient approach for the synthesis of γ-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. Keywords: γ, 3, 4-dihydropyrimidin-2(1H)-ones/thiones, ammonium acetate, solventfree synthesis, promoter.

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Key concepts: Ammonium acetate, Chemistry, Microwave irradiation, Ammonium, Solvent, Combinatorial chemistry, Microwave, Organic chemistry