[reaction: see text] It is shown that nanosized WO(3) particles supported on MCM-48 work as a highly efficient and selective heterogeneous catalyst for the oxidation of olefins, sulfides, and cyclic ketones using hydrogen peroxide or peracetic acid. The catalytic activity of the supported tungstate was dependent on the nature of the supporting materials and particle size. The catalyst system employs environmentally benign oxidants in halide-free solvents, and it does not require phase-transfer agents and pH control.

It has been found that a new and practical catalyst system of ruthenium-supported on alumina carries out copper-free Sonogashira coupling reactions with high efficiency over a wide range of substrates under mild and convenient conditions.

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Oxidation O 0212 WO 3 Nanoparticles on MCM-48 as a Highly Selective and Versatile Heterogeneous Catalyst for the Oxidation of Olefins, Sulfides, and Cyclic Ketones. -The catalyst promotes effectively various oxidation reactions using either hydrogen peroxide or peracetic acid. -(KOO, D. H.; KIM, M.; CHANG*, S.; Org. Lett. 7 (2005) 22, 5015-5018; Dep. Chem., Korea Adv. Inst. Sci. Technol., Taejon 305-701, S. Korea; Eng.) -R. Steudel 10-060

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