Malonic acid was condensed with several aryl – substituted aldehydes to the corresponding 3-phenyl-2-propenoic acids under microwave irradiation in solvent-free conditions on potassium fluoride impregnated alumina. Yields were dramatically improved in comparison with classical heating under the same conditions.
Chemistry under extreme or non-classical conditions;Van EldikR., and HubbardC.D., eds.; John Wiley & Sons, New York, 1996.
6.
BramG., LoupyA., and VilleminD., In Solid Supports and Catalysts in Organic Synthesis;SmithK., ed.; Ellis Horwood, PTR Prentice Hall: Chichester, p. 302, 1992.
7.
LoupyA., PetitA., HamelinJ., Texier-BoulletF., JacquaultP., and MathéD., Synthesis1998, 1213–1234.
8.
FiniA., and BrecciaA., Pure Appl. Chem.1999, 71, 573.
9.
LangaF., Dela CruzP., de la HozA.Contemp. Org. Synth., 1997, 373.
