Selective and mild oxidation of sulfides to sulfoxides or sulfones using H2O2 and Cp′Mo(CO)3Cl as catalysts期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Selective and mild oxidation of sulfides to sulfoxides or sulfones using H₂O₂ and Cp′Mo(CO)₃Cl as catalysts

Authors:	Carla A Gamelas Tiago Lourenço Ana L Simplício Carlos C Romão

Institution:	^a Instituto de Tecnologia Química e, Biológica da Universidade Nova de Lisboa, Av. República, EAN, 2780-157 Oeiras, Portugal ^b Escola Superior de Tecnologia, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal

Abstract:	Dialkyl, aryl-alkyl, benzylic, and benzothiophenic sulfides are selectively oxidized to sulfoxides or sulfones, with stoichiometric amounts of H₂O₂ (aq) or TBHP, in the presence of complexes Cp′Mo(CO)₃Cl, CpMoO₂Cl and the mesoporous material MCM-41-2 as catalysts. The use of the thianthrene 5-oxide (SSO) probe shows that CpMo(CO)₃Cl/H₂O₂ or TBHP are electrophilic oxidants (Xso ? 15). The same conclusion is drawn from competition experiments with a mixture of p-ClC₆H₄SCH₃ and C₆H₅SOCH₃.

Keywords:	Sulfoxide Sulfone Hydrogen peroxide Molybdenum complexes
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