On the Silver Effect and the Formation of Chloride-Bridged Digold Complexes

被引：144

作者：

Homs, Anna ^{[1
]}

Escofet, Imma ^{[1
]}

Echavarren, Antonio M. ^{[1
]}

机构：

[1] Inst Chem Res Catalonia ICIQ, Tarragona 43007, Spain

来源：

ORGANIC LETTERS | 2013年 / 15卷 / 22期

基金：

欧洲研究理事会;

关键词：

INTERMOLECULAR 2+2 CYCLOADDITION; GOLD(I) CATALYSIS; CYCLOISOMERIZATION; ALKENES; ARYLALKYNES; 1,3-ENYNES; MECHANISM; PLATINUM; ALKYNES; ENYNES;

D O I：

10.1021/ol402825v

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

of chloride anion from Au(I) complexes such as JohnPhosAuCl in noncoordinating solvents with 1 equiv of a silver salt, or even larger amounts, leads to the formation of chloride-bridged dinuclear gold(I) complexes, irrespective of the counteranion, which are substantially less reactive as catalysts. This incomplete removal of chloride ligand could lead to false negative results when using the in situ generation of the gold(I) active species by silver-promoted chloride abstraction.

引用

页码：5782 / 5785

页数：4

共 27 条

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