OXYGEN-TRANSFER PROCESSES TO SULFIDES AND SULFOXIDES MEDIATED BY CETYLPYRIDINIUM TETRAKIS(DIPEROXOMOLYBDO) PHOSPHATE

被引：10

作者：

BALLISTRERI, FP ^{[1
]}

TOMASELLI, GA ^{[1
]}

TOSCANO, RM ^{[1
]}

机构：

[1] UNIV CATANIA,DIPARTIMENTO SCI CHIM,V A DORIA 6,I-95125 CATANIA,ITALY

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1991年 / 68卷 / 03期

关键词：

D O I：

10.1016/0304-5102(91)80085-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Oxidation of some aryl methyl sulfides and aryl methyl sulfoxides with hydrogen peroxide, mediated by cetylpyridinium tetrakis(diperoxomolybdo)phosphate (PCMP), was performed in chloroform/ethanol. In addition, the stoichiometric oxidation of sulfoxides to sulfones by PCMP was carried out in chloroform. Second-order rate laws, first order with respect to substrate and to PCMP, were observed in both catalytic and stoichiometric processes. Kinetic data seem to indicate that sulfides are oxidized by a bimolecular process which involves a nucleophilic attack of the substrate on the peroxidic oxygen. On the other hand, the possibility of radical incursion is suggested in the oxidation of sulfoxides.

引用

页码：269 / 275

页数：7

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