Autor: |
Maayan, G., Fish, R. H., Neumann, R. |
Zdroj: |
Organic Letters; October 2003, Vol. 5 Issue: 20 p3547-3550, 4p |
Abstrakt: |
Polyfluorinated quaternary ammonium cations, [CF3(CF2)7(CH2)3]3CH3N+ (RFN+), were synthesized and used as countercations for the [WZnM2(H2O)2(ZnW9O34)2]12- (M = Mn(II), Zn(II)) polyoxometalate. The (RFN+)12[WZnM2(H2O)2(ZnW9O34)2] compounds were fluorous biphasic catalysts for alcohol and alkenol oxidation, and alkene epoxidation with aqueous hydrogen peroxide. Reaction protocols with or without a fluorous solvent were tested. The catalytic activity and selectivity was affected by both the hydrophobicity of the solvent and the substrate. |
Databáze: |
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