Solvent-free silica gel mediated decarboxylation of C-O coupling products of beta-diketones and beta-oxo esters with malonyl peroxides

摘要

Silica gel was found to mediate decarboxylation of tetra carbonyl compounds with a free carboxylic group prepared from beta-dicarbonyl compounds and malonyl peroxides. Under solvent-free heterogeneous conditions silica gel effectively acts as a mediator of C-O coupling with further decarboxylation at 120 degrees C.