Hybrid polyoxotungstates as second-generation POM-based catalysts for microwave-assisted H2O2 activation

被引：102

作者：

Carraro, Mauro

Sandei, Luca

Sartorel, Andrea

Scorrano, Gianfranco

Bonchio, Marcella

机构：

[1] Univ Padua, ITM, CNR, I-35131 Padua, Italy

[2] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy

来源：

ORGANIC LETTERS | 2006年 / 8卷 / 17期

关键词：

D O I：

10.1021/ol061197o

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Organic - inorganic hybrids synthesized from lacunary polyoxotungstates (POMs) have been screened as oxidation catalysts with H2O2 under MW irradiation. Yields up to 99% have been obtained in 25-50 min depending both on the POM structure and on the organic moiety. The reaction scope, optimized with the best performing catalyst [gamma-SiW10O36(PhPO)(2)](4-), includes epoxidation of terminal and internal double bonds, alcohol oxidation, and sulfoxidation, as well as oxygen transfer to electron-deficient substrates as chalcone, ketones, and sulfoxides.

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页码：3671 / 3674

页数：4

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