Application of Microwave in Organic Synthesis. Dry Synthesis of 2-Arylmethylene-3(2)-naphthofuranones

Abstract
3(2)-Naphthofuranone (1) was condensed in the presence of Al2O3-KF with aromatic aldehydes (4) to give arylidenenaphthofuranones (5a-f) without solvent under focused microwave irradiation.