Sol-gel immobilized Hoveyda-Grubbs complex through the NHC ligand: A recyclable metathesis catalyst
Sol-gel immobilized Hoveyda-Grubbs complex through the NHC ligand: A recyclable metathesis catalyst
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DOI：
10.1016/j.molcata.2012.01.019
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发表时间：
2012-05-01
影响因子：
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通讯作者：
Man, Michel Wong Chi
中科院分区：
文献类型：
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作者：
Monge-Marcet, Amalia;Pleixats, Roser;Man, Michel Wong Chi
合成了一种双甲硅烷基化的Hoveyda-Grubbs钌亚烷基配合物，以及通过溶胶-凝胶法制备和表征的有机硅与正硅酸乙酯（TEOS）的共凝胶化。该材料是用于各种复分解反应的活性负载催化剂。即使对于三取代烯烃的形成，也已经证明了可再循环性。这是通过溶胶-凝胶共凝胶化从具有甲硅烷基化NHC部分的明确定义的钌亚烷基前体制备的固定化Hoveyda-Grubbs型络合物的第一个实例。(C)2012爱思唯尔有限公司版权所有。
The synthesis of a bis-silylated Hoveyda-Grubbs ruthenium alkylidene complex is described, as well as the preparation via the sot-gel process and the characterization of an organosilica by co-gelification with tetraethyl orthosilicate (TEOS). This material is an active supported catalyst for various metathesis reactions. The recyclability has been proven even for the formation of a trisubstituted olefin. This is the first example of an immobilized Hoveyda-Grubbs' type complex prepared by sol-gel co-gelification from a well-defined ruthenium alkylidene precursor bearing a silylated NHC moiety. (C) 2012 Elsevier B.V. All rights reserved.