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Oxidation of Sulfides with Pyridinium Tribromide in the Presence of Hydrated Silica Gel
Authors:Mohammed Hashmat Ali  Susan Stricklin
Institution:1. Chemistry Department , Southeast Missouri State University, Cape Girardeau , Missouri , USA mhali@semo.edu;3. Chemistry Department , Southeast Missouri State University, Cape Girardeau , Missouri , USA
Abstract:A variety of sulfides have been oxidized to sulfoxides utilizing pyridinium tribromide in the presence of hydrated silica gel in a non‐aqueous media. A combination of pyridinium tribromide and hydrated silica gel releases molecular bromine slowly in the reaction, affecting the oxidation. Hydrated silica gel also promotes decomposition of the bromosulfonium intermediate to the product. This procedure employs non‐aqueous media for the first time in such a reaction.
Keywords:Oxidation  pyridinium tribromide  silica gel  sulfide  sulfoxide
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