The catalytic activity of poly(siloxane)-supported metalloporphyrins in olefin oxidation reactions: The effect of the support on the catalytic activity and selectivity

被引：18

作者：

Hilal, HS ^{[1
]}

Jondi, W ^{[1
]}

Khalaf, S ^{[1
]}

Keilani, A ^{[1
]}

Suleiman, M ^{[1
]}

Schreiner, AF ^{[1
]}

机构：

[1] N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1996年 / 113卷 / 1-2期

关键词：

cyclohexene; poly(siloxane)-supported catalysts; manganese; metalloporphyrins; oxidation; siloxane; supported catalysts; tin;

D O I：

10.1016/S1381-1169(96)00055-6

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：

Supported tetra(-4-pyridyl)porphyrinato-manganese(III) [Mn-III(TPyP)](+) and -tin(IV) [Sn-IV(TPyP)](2+) have been prepared. The solid support was iodonated poly(siloxane) surface prepared by condensation reactions of (EtO)(4)Si with (MeO)(3)Si(CH2)(3)I. The supported metalloporphyrins were employed as catalysts for the oxidation reactions of 1-octene and of cyclohexene. NaBH4 was used to reduce [Mn-III(TPyP)](+) and [Sn-IV(TPyP)](2+) back to their catalytically active Mn-II and Sn-II forms, respectively. Contrary to their homogeneous counterparts, both of the supported metalloporphyrins catalysed the cyclohexene oxidation reaction to yield only 2-cyclohexen-1-one with no other products over a reaction time of 10 h. In addition to cyclohexene oxidation, the supported [Mn-III(TPyP)](+) catalysed 1-octene oxidation as well, whereas the supported [Sn-IV(TPyP)](2+) was inactive for the oxidation of 1-octene.

引用

页码：35 / 44

页数：10

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