Ammoniummetavanadate: amild and efficient catalyst for the synthesis of 2, 3-dihydro-2-phenyl-1H-naphtho-[1, 2-e] [1,3]oxazine derivatives

N.V.Shitole, S.D.Soluke, M.S.S

Abstract

An efficient and simplified protocol for boric acid catalyzed solvent-free synthesis of â-enaminones derivatives under microwave irradiation is described. The remarkable advantages offered by this method are inexpensive and readily available catalyst, simple procedure, faster reactions and high yield of products.