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

Authors
Neys, PEF Severeyns, A Vankelecom, IFJ Ceulemans, E Dehaen, W Jacobs, PA
Citation
Pef. Neys et al., Manganese porphyrins incorporated in polydimethylsiloxane membranes: selective catalysts for the epoxidation of deactivated alkenes, J MOL CAT A, 144(2), 1999, pp. 373-377
Citations number
13
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
ISSN journal
13811169 → ACNP
Volume
144
Issue
2
Year of publication
1999
Pages
373 - 377
Database
ISI
SICI code
1381-1169(19990805)144:2<373:MPIIPM>2.0.ZU;2-2
Abstract
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 suppo rt immmobilizes and disperses the porphyrin molecules, but also steers the reaction by providing for a more balanced reagent composition near the acti ve site. (C) 1999 Elsevier Science B.V. All rights reserved.