Tungstoborates as Highly Active Catalysts for Cycloalkane Oxygenation Using Hydrogen Peroxide

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Abstract
Keggin-type tungstoborates [BW12O40]5-, Hx[BW11O39]9-x)- and [BM(H2O)W11O39]6-, M = FeIII, MnIII or RuIII proved to be highly active catalysts for the H2O2 oxidation of cyclooctane and cyclohexane to the corresponding ketone, alcohol and alkyl hydroperoxide derivatives. High turnover numbers and high selectivity for the hydroperoxide were observed.