Mesoporous MCM41-heterogenised (salen)Mn and Cu complexes as effective catalysts for oxidation of sulfides to sulfoxides -: Isolation of a stable supported Mn(V)=O complex, responsible of the catalytic activity

被引：77

作者：

Ayala, V

Corma, A

Iglesias, M

Sánchez, F

机构：

[1] CSIC, Inst Quim Organ Gen, Madrid 28006, Spain

[2] Univ Politecn Valencia, CSIC, Inst Tecnol Quim, Valencia 46022, Spain

[3] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2004年 / 221卷 / 1-2期

关键词：

immobilised salen; heterogenisation; sulfide oxidation; manganese; copper;

D O I：

10.1016/j.molcata.2004.07.010

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：

Chiral salen manganese and copper complexes immobilised on mesoporous silica supports (silica, MCM-41) have been investigated as catalysts in the sulfide to sulfoxide oxidation; the supported catalysts are highly suited to reactions leading to high yields and high sulfoxide/sulfone selectivity while moderate asymmetric induction (up to 30%) was observed. The presence of stable manganyl [Mn(V)=O] complexes into support channels have been established, being responsible for catalytic activity. The recovery and reusability of heterogenised Mn- and Cu-catalysts have been studied. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：201 / 208

页数：8

共 47 条

[1] New Mn(II) and Cu(II) chiral C2-multidentate complexes immobilised in zeolites (USY, MCM41) -: Reusable catalysts for selective oxidation reactions [J].