Hydrosilylation of alkynylsilanes utilizing organolanthanide and Group 3 metallocene complexes

被引：23
|
作者：
Molander, GA [1 ]
Romero, JAC [1 ]
Corrette, CP [1 ]
机构：
[1] Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, Philadelphia, PA 19104 USA
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 647卷 / 1-2期
基金：
美国国家卫生研究院;
关键词：
organolanthanide; organoyttrium; catalysis; hydrosilylation; alkynylsilane; bis(silyl)alkene;
D O I：
10.1016/S0022-328X(01)01483-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The organolanthanide- and Group 3 metallocene-catalyzed hydrosilylation of alkynylsilanes has been found to provide (Z)-1,1-bis(silyl)alkenes. In particular, Cp-2*YMeTHF (1), [(Cp2YMe)-Y-TMS](2) (2), and [(Cp2LuMe)-Lu-TMS](2) (3) were shown to be regioselective for the hydrosilylation of various alkynylsilanes (Fig. 1). The process was evaluated for diverse substitution patterns and functional groups on the pendant alkyl chain. Silyl ethers and halogens are stable to the catalytic process, affording excellent chemo- and regioselectivities. Competition between 'aryl-directed' and 'silyl-directed' processes was observed upon hydrosilylation of (phenylethynyl)dimethylsilane. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：225 / 235
页数：11
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