beta-Carboline-directed decarboxylative acylation of ortho-C(sp(2))-H of the aryl ring of aryl(beta-carbolin-1-yl)methanones with alpha-ketoacids under palladium catalysis

摘要

A palladium-catalysed beta-carboline directed decarboxylative acylation of ortho-C(sp(2))-H of the aryl ring of aryl(beta-carbolin-1-yl)methanones using alpha-oxocarboxylic acid as the acyl ion equivalent to form (2-aroylaryl)(beta-carbolin-2-yl) methanones is described. The utility of these products for preparing beta-carboline-tethered phthalazine systems is also demonstrated.