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‎(Polysiloxane)-Supported Metalloporphyrin Catalysts: The Effect of the Support on the Catalyst ‎Activity and Selectivity

Hikmat S. Hilal's picture
Tue, 2014-03-18 14:42 — Hikmat S. Hilal, D.Sc.
Journal Title, Volume, Page: 
. Mol. Catal., 113(1996)35-44.
Year of Publication: 
1996
Link: 
http://blogs.najah.edu/staff/hikmat-hilal/article/H-2
Authors: 
Hikmat S. Hilal
Current Affiliation: 
Department of Chemistry, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine
[email protected]
W. Jondi
Sh.Khalaf
A.Keilani
M.Suleiman
A.F.Schreiner
Preferred Abstract (Original): 

The solid support was iodonated poly(siloxane) surface prepared by condensation reactions of (EtO),Si with (MeO),Si(CH,),I. The supported metalloporphyrins were employed as catalysts for the oxidation reactions of 1-octene and of cyclohexene. NaBH, was used to reduce [MnIII(TPyP)]+ and [Sn1V(TPyP)]2+ back to their catalytically active Mn” and Sn” forms, respectively. Contrary to their homogeneous counterparts, both of the supported metalloporphyrins catalysed the cyclohexene oxidation reaction to yield only 2-cyclohexen-l-one with no other products over a reaction time of 10 h. In addition to cyclohexene oxidation, the supported [MnIII(TPyP)]+ catalysed I-octene oxidation as well, whereas the supported [Sn’“(TPyP)]2+ was inactive for the oxidation of 1-octene.