A highly efficient and recyclable molybdate sulfuric acid (MSA) catalyst for the synthesis of dimethyl (2,3-dihydro-1H-inden-6-ylamino) (substituted) methylphosphonates under microwave irradiation

Abstract

An efficient green synthesis of dimethyl (2,3-dihydro-1H-inden-6-ylamino) (substituted) methylphosphonates has been achieved under solvent-free conditions by the reaction of 2,3-dihydro-1H-inden-5-amine, aldehydes and ethyl dimethyl phosphonate by microwave irradiation in the presence of molybdate sulfuric acid (MSA) as a catalyst. High product yields in shorter reaction times, easy isolation of products, reusability of solid catalysts and environmentally benign reaction conditions are its advantages.