D. Villemin et al., DRY REACTION ON KF-ALUMINA - SYNTHESIS OF 4-ARYLIDENE-1,3-(2H,4H) ISOQUINOLINEDIONES, Synthetic communications, 28(17), 1998, pp. 3195-3200
1,2,3,4-Tetrahydroisoquinoline-1,3-dione (1) and arylcarboxy-aldehydes
(2) were condensed to methylene)-1,2,3,4-tetraydroisoquinoline-1,3-di
one (3) in presence of potassium fluoride on alumina without solvent u
nder focused microwave irradiation.