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Letters in Organic Chemistry

Author(s): Debojeet Sahu, Biplab Banik, Malabika Borah and Pankaj Das

DOI: 10.2174/1570178611666140617213620

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Efficient Alcohol Oxidation Reaction Catalyzed by a Cobalt (II) and an Iron (III) Complexes Containing DPEPhos Ligand using H2O2 as Oxidant

Page: [671 - 676] Pages: 6

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Abstract

We have investigated the catalytic activities of a cobalt(II) complex, [CoCl2(η2-P,P-DPEphos)](1), and an iron(III) complex, [FeCl3(η1-P-DPEphos)(η2-P,P-DPEphos)](2), [DPEphos = bis[2-(diphenylphosphino)-phenyl]ether] for alcohol oxidation reaction. Under the same set of experimental conditions, the iron complex 2 exhibits superior results over its cobalt counterpart 1. With the iron complex 2, a broad range of alcohols including benzyl alcohols, cinnamyl alcohol, aliphatic alcohol, etc. are efficiently oxidized to corresponding aldehydes or ketones using H2O2 as oxidant, at a low loading of catalyst (0.2 mol %), in a base free environment.

Keywords: Air, alcohol oxidation, cobalt (II), DPEphos, H2O2, iron (III).

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