- Monday, January 1, 1996
- (Polysiloxane)-supported metalloporphyrin catalysts: the effect of the support on the catalyst activity and selectivity
- Published at:Not Found
H. S. Hilal*, W. Jondi, Sh.Khalaf, A.Keilani, M.Suleiman and A.F.Schreiner, J. Mol. Catal., 113(1996)35-44.
[MnIII(TPyP)]+ and -tin(W) [SnTPyP)]2+ have been prepared.
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.