D. Villemin et al., APPLICATION OF MICROWAVE IN ORGANIC-SYNTHESIS - DRY SYNTHESIS OF 2-ARYLMETHYLENE-3(2)-NAPHTHOFURANONES, Molecules, 3(3), 1998, pp. 88-93
3(2)-Naphthofuranone (1) was condensed in the presence of Al2O3-KF wit
h aromatic aldehydes (4) to give arylidenenaphthofuranones (5a-f) with
out solvent under focused microwave irradiation.