N-Alkoxyimidazolylidene transition-metal complexes:: Application to [5+2] and [4+2] cycloaddition reactions

被引：37
|
作者：
Gomez, Fernando J. [1 ]
Kamber, Nahrain E. [1 ]
Deschamps, Nicole M. [1 ]
Cole, Adam P. [1 ]
Wender, Paul A. [1 ]
Waymouth, Robert M. [1 ]
机构：
[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA
来源：
ORGANOMETALLICS | 2007年 / 26卷 / 18期
关键词：
D O I：
10.1021/om700493y
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Silver(I) bis[(benzyloxy)imidazol-2-ylidene] complex 6 is prepared by reaction of an alkoxyimidazolium bromide (4) with Ag2O. In situ deprotonation of the alkoxyimidazolium bromide 4 afforded the rhodium(I) and palladium(II) complexes 7 and 8, whose structures were verified by X-ray crystallography. Rhodium(I) ( benzyloxy) imidazolylidene complex 7 efficiently catalyzes the [5+2] cycloaddition reaction of an yne-vinylcyclopropane (93%) and the [4+2] cycloaddition reaction of a diene-yne (99%) at room temperature in minutes.
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收藏
页码：4541 / 4545
页数：5
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