Mechanism of the carbopalladation of alkynes by aryl-palladium complexes

被引：76

作者：

Amatore, C

Bensalem, S

Ghalem, S

Jutand, A

机构：

[1] UPMC, ENS, CNRS, UMR 8640,Dept Chim, F-75231 Paris 5, France

[2] Univ Tlemcen, Fac Sci, Dept Chim, Tilimsen 13000, Algeria

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2004年 / 689卷 / 24期

关键词：

carbopalladation; multicarbopalladation; palladium; alkynes; oxidative addition; vinyl iodide;

D O I：

10.1016/j.jorganchem.2004.05.032

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction between trans-PhPdI(PPh3)(2) and EtO2C-CdropCH has been investigated. This carbopalladation step involved in palladiurn-catalyzed multicomponent reactions with alkynes gives the unusual trans-adduct EtO2C-C(PdIL2)=CHPh 1 as the major complex formed by isomerization of the primary cis-adduct EtO2C-C(PdIL2)=CHPh 2. The carbopalladation was regiospecific. A multicarbopalladation was also observed by successive carbopalladation of EtO2C-CdropCH by the vinyl-palladium complexes themselves generated in carbopalladation steps, leading to cationic complexes. (C) 2004 Elsevier B.V. All rights reserved.

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页码：4642 / 4646

页数：5

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