期刊
TETRAHEDRON
卷 57, 期 13, 页码 2469-2476出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(01)00068-0
关键词
green chemistry; hydrogen peroxide; oxidation; phase-transfer catalyst; quaternary ammonium salts; sulfides; sulfones; sulfoxides
Aromatic and aliphatic sulfides are oxidized to sulfoxides or sulfones in high yield with 30% hydrogen peroxide under organic solvent- and halogen-free conditions. Dialkyl and alkyl aryl sulfides are cleanly oxidized to sulfoxides using aqueous hydrogen peroxide without catalysts. The best catalyst for the sulfone synthesis consists of sodium tungstate, phenylphosphonic acid, and methyltrioctyl-ammonium hydrogensulfate. Go-existing primary or secondary alcohol or olefinic moieties are unaffected under such conditions. (C) 2001 Elsevier Science Ltd. All rights reserved.
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