Synthesis · 1996 · 30 citations · 0 references
Natural SciencesChemistryCatalysisInorganic ChemistryOrganic ChemistryCatalyst PreparationCatalyst SynthesisCatalytic MaterialsCatalytic Reaction EngineeringOrganic SynthesisOxidation ReactionsAlcohol OxidationHydride FormationMild Reaction ConditionsOxidationOxidation Of Alcohols To Carbonyl CompoundsOxidative CatalysisSupported Oxidation Catalysts
A new variation of the Oppenauer oxidation is presented with chloral as the hydride acceptor and Zr(O-t-BU)4 or, for highly reactive carbonyl products, the heterogeneous system SiO2/Zr(O-n-Pr)x, as the catalyst. The reaction proceeds under mild conditions (20°C) with a substoichiometric amount of Zr(O-t-Bu)4 (usually 20%). Primary and secondary allyl alcohols are converted in high yields to the corresponding carbonyl compounds.