Manganese porphyrins incorporated in polydimethylsiloxane membranes: selective catalysts for the epoxidation of deactivated alkenes

被引：36

作者：

Neys, PEF

Severeyns, A

Vankelecom, IFJ

Ceulemans, E

Dehaen, W

Jacobs, PA

机构：

[1] Katholieke Univ Leuven, Centrum Oppervlaktechem Katalyse, Dept Interfasechem, B-3001 Heverlee, Belgium

[2] Katholieke Univ Leuven, Synth Organ Lab, Dept Scheikunde, B-3001 Heverlee, Belgium

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1999年 / 144卷 / 02期

关键词：

manganese porphyrin; polydimethylsiloxane; membranes; epoxidation;

D O I：

10.1016/S1381-1169(99)00185-5

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：

The use of [5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrinato] manganese(III) chloride (TDCPP(Mn)Cl) in the presence of an axial ligand and embedded in a polydimethylsiloxane (PDMS) membrane is reported for the epoxidation of an enol with aqueous H2O2. Unlike the homogeneously catalyzed reaction, no ketone product is formed with the PDMS resident catalyst. The PDMS support immmobilizes and disperses the porphyrin molecules, but also steers the reaction by providing for a more balanced reagent composition near the active site. (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：373 / 377

页数：5

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