An Efficient Microwave-Assisted Propylphosphonic Anhydride (T3P?)-Mediated One-Pot Chromone Synthesis via Enaminones

摘要

An efficient synthesis of 4 H -chromene-4-ones via enamino ketones, with cyclization by using T3P~(?) under microwave heating is described. This is the first report for the synthesis of chromones by using T3P~(?). Significant features of this method include short reaction times and high-purity products .