Hydrosilylation of alkynes mediated by N-heterocyclic carbene platinum(0) complexes

被引：107

作者：

De Bo, G ^{[1
]}

Berthon-Gelloz, G ^{[1
]}

Tinant, B ^{[1
]}

Markó, IE ^{[1
]}

机构：

[1] Catholic Univ Louvain, Dept Chim, B-1348 Louvain, Belgium

来源：

ORGANOMETALLICS | 2006年 / 25卷 / 08期

关键词：

D O I：

10.1021/om050866j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The hydrosilylation of terminal alkynes by silanes catalyzed by N-heterocyclic carbene platinum(O) complexes has been investigated. The alkynes included 1-octyne and phenylacetylene. The silanes investigated were bis(trimethylsilyloxy)methylsitane, (trimethylsilyloxy)dimethylsilane, tert-butyldimethylsilane, triphenylsilane, phenyldimethylsilane, triethylsilane, and triethoxysilane. X-ray crystal structures for [Pt(N,N'-dicyclohexylimidazol-2-ylidene)(eta(2)-dimethylacetylenedicarboxylate)(2)] (8) and [Pt{C(E)=C(E)-C(E)=C(E)}(N,N'-dimethylbenzimidazol-2-ylidene)(sigma-NCCH3)] (10) (E = CO2Me) have been obtained. A selectivity model, based on structural parameters of the N-heterocyclic carbene, has been devised in order to rationalize the observed regioselectivity obtained. By a judicious choice of catalyst, alkyne, and silane, the regioselectivity of the addition can be controlled.

引用

页码：1881 / 1890

页数：10

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