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Synfacts 2008(2): 0209-0209
DOI: 10.1055/s-2007-992514
DOI: 10.1055/s-2007-992514
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York
Selective Oxidation Using Nano-γ-Fe2O3 Catalysts
F. Shi, M. K. Tse, M.-M. Pohl, A. Brückner, S. Zhang, M. Beller*
University of Rostock, Germany and Henan University, Kaifeng, P. R. of China
Further Information
Publication History
Publication Date:
23 January 2008 (online)
Significance
The oxidation of various alcohols 1 with hydrogen peroxide took place in the presence of 1 mol% of nano-γ-Fe2O3 catalyst to give the corresponding carbonyl compounds 2a-e with up to 99% chemoselectivity (eq. 1). The catalyst was separated from the reaction mixture by simple decantation and reused five times in the oxidation of cyclooctanol 1e with no significant loss of activity and chemoselectivity. The catalyst was also used in the oxidation of aromatic olefins 3 leading to the corresponding aldehydes 4a-e with high chemoselectivity (eq. 2).