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Selective, Metal-Free Oxidation of Sulfides to Sulfoxides Using 30% Hydrogen Peroxide Catalyzed with N-Bromosuccinimide (NBS) under Neutral Buffered Reaction Conditions

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This paper is dedicated to Professor Habib Firouzabadi on the occasion of his 65th birthday and also his retirement Various types of aromatic and aliphatic sulfides are selectively oxidized to the corresponding sulfoxides in good to excellent yields using 30% H2O2 in the presence of catalytic amounts of N-bromosuccinimide (NBS) in buffered aqueous acetonitrile solution (pH =7.00). The results showed that acid sensitive functional groups such as double bonds, and O,O-acetals remained intact under the described reaction conditions

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