1-(3, 4-Dichlorobenzenesulfonyl)-3-Methyl-1H-Imidazolium Chloride: An Efficient Catalyst for the Synthesis of 1, 8-Dioxo-Octahydroxanthenes under Microwave Irradiation

Abstract

The reaction of 5,5-dimethyl-1,3-cyclohexanedione with various aromatic aldehydes to give corresponding 1,8-dioxo-octahydroxanthenes in aqueous medium has been reported. These reactions were carried out under microwave irradiation and catalyzed by 1-(3, 4- dichlorobenzenesulfonyl)-3-methyl-1H-imidazolium chloride. A plausible mechanism for the synthesis of 1,8-dioxo-octahydroxanthenes catalyzed by[3, 4-dcbsmim][Cl] in water has been given