A novel and green method for N-acylation of amines and sulfonamides under ultrasound irradiation

Abstract

A facile and versatile method for acylation of structurally diverse amines and sulfonamides under focused ultrasonic irradiation in catalyst-free and solvent-free conditions is reported. There are several advantages to this approach such as simple and easier workup conditions, small amount of time and high yielding. The acylation reaction was carried out with acetic anhydride. All structures of synthesized products have been identified by NMR and mass spectroscopy.