Coupling of propargylsilanes with Fischer carbene chromium complexes: a new synthesis of conjugated dienes

被引：11

作者：

Patel, PP

Zhu, YX

Zhang, L

Herndon, JW ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Chem & Biochem, MSC 3C, Las Cruces, NM 88003 USA

[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2004年 / 689卷 / 21期

基金：

美国国家卫生研究院;

关键词：

carbene complexes; chromium; alkynes; silicon migration; dienes;

D O I：

10.1016/j.jorganchem.2004.07.051

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of propargylsilanes with Fischer carbene complexes has been examined. If the silane-containing carbon is secondary the predominant pathway involves formation of conjugated dienes through a 1,2-silicon shift process of the initially formed vinyl-carbene complex intermediate. If a primary propargylsilane is employed, the silicon does not shift and normal alkyne-Fischer carbene coupling processes are observed. The process is moderately stereoselective, resulting in the E enol ether and Z alkenylsilane. (C) 2004 Elsevier B.V. All rights reserved.

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收藏

页码：3379 / 3387

页数：9

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