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چکیده
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Since the oxygenated products are useful as platform commodities and specialty chemicals, liquid-phase selective oxidation of organic substrates is an important reaction [1]. Sulfoxides and sulfones are useful organosulfur compounds as synthetic intermediates for natural products and biologically important molecules [2], ligands used for asymmetric catalysis [3,4], and oxygen atom donors [5]. Niobium compounds and materials are shown to be useful as promoters and supports of catalysts and as unique solid acid catalysts, selective oxidation catalysts and photosensitive catalysts [6]. In this study, first biochar was formed out of biomass in high temperature. Afterwards, the surface of biochar was modified with ionic-liquid to obtain Niobium compounds. The synthesis of sulfoxides derivatives was preformed in absence of solvents and room temperature condition, with high yield. The advantages of this reaction include easy catalyst separation and reusability, selective and high efficient reactions with short reaction time.
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