Investigation of the Reaction Mechanism for the Epoxidation of Alkenes with Hydrogen Peroxide Catalyzed by a Protonated Tetranuclear Peroxotungstate with NMR …

R Ishimoto, K Kamata, N Mizuno

Index: Ishimoto, Ryo; Kamata, Keigo; Mizuno, Noritaka European Journal of Inorganic Chemistry, 2013 , # 10-11 p. 1943 - 1950

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Citation Number: 2

Abstract

Abstract For the epoxidation of cyclooctene with hydrogen peroxide (H 2 O 2), the catalytic activity of a dinuclear peroxotungstate,[{WO (O 2) 2} 2 (μ-O)] 2–, is strongly dependent on additives, and HClO 4 is the most effective. The reaction of [{WO (O 2) 2} 2 (μ-O)] 2–with HClO 4 (0.5 equiv.) gives a protonated tetranuclear peroxotungstate,[H {W 2 O 2 (O 2) 4 (μ- O)} 2] 3–(I). The diastereoselectivity for epoxidation of 3-methyl-1-cyclohexene shows that ...