Intermediates in nickel(0)-phosphine complex catalyzed dehydrogenative silylation of olefins

被引：17
|
作者：
Maciejewski, Hieronim
Sydor, Agnieszka
Marciniec, Bogdan
Kubicki, Maciej
Hitchcock, Peter B.
机构：
[1] Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland
[2] Univ Sussex, Chem Lab, Brighton BN1 9QJ, E Sussex, England
来源：
INORGANICA CHIMICA ACTA | 2006年 / 359卷 / 09期
关键词：
nickel-silyl complexes; dehydrogenative silylation; catalysis;
D O I：
10.1016/j.ica.2005.12.067
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Nickel(0) complexes 1-4 containing pi-coordinated olefin and triphenylphosphine (tricyclohexylphosphine) (starting from Ni(cod)(2)) were prepared and the X-ray structures of 1 and 2 were resolved. The complexes appeared as efficient catalysts in dehydrogenative silylation of styrene and vinyltris(trimethylsiloxy)silane, but only after prior oxygenation of phosphine ligand. Stoichiometric studies of Ni(0) complexes with substrates showed that the bis(silyl)nickel(II) complex was a key intermediate in both reactions examined. A scheme of catalysis by Ni(O) complex involving olefin insertion into Ni-Si bond, as a crucial step, is presented. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：2989 / 2997
页数：9
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