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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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 ...

A convenient synthesis of epoxides from olefins using molecular oxygen in the absence of metal catalysts

[Kaneda, Kiyotomi; Haruna, Shigeru; Imanaka, Toshinobu; Hamamoto, Masatoshi; Nishiyama, Yutaka; Ishii, Yasutaka Tetrahedron Letters, 1992 , vol. 33, # 45 p. 6827 - 6830]

Studies in the thianthrene system: Bromination and reductive bromination

[Gilman; Swayampati Journal of the American Chemical Society, 1955 , vol. 77, p. 5944,5947]

Syntheses and Structural Analysis of 10??Monoxy??and??Dioxy??5??N??Substituted Iminothianthrene Derivatives and the Stereochemical Change on their Sulfur Atom …

[Morita, Hiroyuki; Kawaguchi, Hiroyuki; Yoshimura, Toshiaki; Tsukurimichi, Eiichi; Shimasaki, Choichiro; Horn, Ernst Chemistry - A European Journal, 2000 , vol. 6, # 21 p. 3976 - 3983]