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Oxidation of a variety of saturated and unsaturated primary and secondary alcohols by tetraoxoruthen-ate(VI), RuO42–, tetraoxoruthenate(VII), RuO4–, barium trans-trioxodihydroxoruthenium(VI), trans-BaRu(OH)2O3, dioxotrichlororuthenate(VI), RuO2Cl3–, and dioxodichlorobipyridylruthenate(VI), RuO2(bipy)Cl2, has been studied; RuO42–may be used catalytically in conjunction with S2O82– under basic aqueous conditions. For some of these systems, the oxidation of several aldehydes and amines were also examined. Both RuO42–and RuO4– oxidise primary alcohols to carboxylic acids and secondary alcohols to ketones; the reactivity of these reagents towards unsaturated alcohols was studied in particular. The new species PPh4RuO2Cl3 and also RuO2(bipy)Cl2 cleanly oxidise a wide range of alcohols to aldehydes and ketones without attack of double bonds. BaRu(OH)2O3 functions as a heterogeneous oxidant in dichloromethane, oxidising only the most reactive alcohols to aldehydes.
Green et al. (Sun,) studied this question.