Activation of Superoxide. Facile Oxidation of Sulfoxides into Sulfones with a Peroxysulfur Intermediate Generated in situ from 2-Nitrobenzenesulfonyl Chloride and Superoxide

Article abstract of DOI:10.1246/cl.1987.1499

Various sulfoxides, such as dialkyl, alkyl-aryl, and diaryl sulfoxides, were readily oxidized into the corresponding sulfones, in excellent yields under mild conditions, by 2-nitrobenzene peroxysulfur intermediate generated in situ from 2-nitrobenzene-sulfonyl chloride and potassium superoxide at -30 deg C, in dry acetonitrile.Chemoselective oxidation of sulfoxides which contain both double bond and sulfinyl moiety to the sulfones, was observed under the same conditions.