Dendrimer-Encapsulated Pd Nanoparticles versus Palladium Acetate as Catalytic Precursors in the Stille Reaction in Water

被引：89

作者：

Bernechea, Maria ^{[1
]}

de Jesus, Ernesto ^{[1
]}

Lopez-Mardomingo, Carmen ^{[2
]}

Terreros, Pilar ^{[3
]}

机构：

[1] Univ Alcala de Henares, Dept Quim Inorgan, Madrid 28871, Spain

[2] Univ Alcala de Henares, Dept Quim Organ, Madrid 28871, Spain

[3] CSIC, Inst Catalisis & Petr Quim, Madrid 28049, Spain

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 10期

关键词：

C-COUPLING-REACTIONS; HECK REACTIONS; METAL NANOPARTICLES; CARBON-CARBON; AMBIENT CONDITIONS; SUZUKI REACTIONS; HYDROGENATION; NANOCLUSTERS; STABILITY; COMPLEXES;

D O I：

10.1021/ic9002753

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The performance of several palladium precatalysts, namely, palladium(II) acetate, palladium(O) nanoparticles encapsulated into poly(amidoamine) (PAMAM) dendrimers (Pd DENs), and palladium(II)-PAMAM complexes, in the Stille reaction between trichloro(phenyl)stannane and iodoarenes in water is compared. The reactivity of Pd DENs is similar or inferior to that of palladium(II) acetate, although the presence of the dendrimer suppresses the formation of homocoupling products and allows catalyst recycling. It is suggested that the reaction catalyzed by Pd DENs occurs via palladium species which are leached from the nanoparticle but which remain coordinated to the dendritic macromolecule.

引用

页码：4491 / 4496

页数：6

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