Perfluoroalkylated-pyridine catalyzed Aldol condensations of aldehydes and ketones in a fluorous biphasic system without fluorous solvent
摘要:
Aldol condensation of different ketones with various aromatic aldehydes proceeds efficiently in the presence of catalytic amount of perfluoroalkylated-pyridine in a fluorous biphasic system without fluorous solvent, which has prompted various concerns involving cost, solvent leaching, and environmental persistence. The catalyst can be recovered by simple cooling and precipitation and used again. (C) 2009 Elsevier B.V. All rights reserved.
Palladium(II) acetate catalyses the aerobic oxidation of alcohols into the corresponding aldehydes and ketones in the presence of a catalytic amount of a novel perfluoroalkylated-pyridine as a ligand using molecular oxygen in a fluorous biphase system (FBS) composed of toluene and perfluorodecalin. This catalytic system is applicable to various benzylic and aliphatic alcohols. The fluorous phase containing