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

Hikmat S. Hilal's picture
Journal Title, Volume, Page: 
. Mol. Catal., 113(1996)35-44.
Year of Publication: 
Hikmat S. Hilal
Current Affiliation: 
Department of Chemistry, An-Najah National University, PO Box 7, Nablus, West Bank, Palestine
W. Jondi
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.