A single-step procedure for the preparation of palladium nanoparticles and a phosphine-functionalized support as catalyst for Suzuki cross-coupling reactions

被引：100

作者：

Costa, Natalia J. S. ^{[1
]}

Kiyohara, Pedro K. ^{[2
]}

Monteiro, Adriano L. ^{[3
]}

Coppel, Yannick ^{[4
,5
]}

Philippot, Karine ^{[4
,5
]}

Rossi, Liane M. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-05508000 Sao Paulo, Brazil

[2] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[3] Univ Fed Rio Grande do Sul, Inst Quim, Lab Mol Catalysis, BR-91501970 Porto Alegre, RS, Brazil

[4] CNRS, LCC, F-31077 Toulouse, France

[5] Univ Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France

来源：

JOURNAL OF CATALYSIS | 2010年 / 276卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

Palladium; Iminophosphine; Suzuki reaction; Nanoparticle; Magnetic separation; IMINOPHOSPHINE-PALLADIUM(0) COMPLEXES; RECYCLABLE CATALYSTS; LIGAND; HECK; NMR; MONOLAYERS; DYNAMICS; CORE;

D O I：

10.1016/j.jcat.2010.09.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We here report the preparation of supported palladium nanoparticles (NPs) stabilized by pendant phosphine groups by reacting a palladium complex containing the ligand 2-(diphenylphosphino)benzaldehyde with an amino-functionalized silica surface The Pd nanocatalyst is active for Suzuki cross-coupling reaction avoiding any addition of other sources of phosphine ligands The Pd intermediates and Pd NPs were characterized by solid-state nuclear magnetic resonance and transmission electron microscopy techniques The synthetic method was also applied to prepare magnetically recoverable Pd NPs leading to a catalyst that could be reused for up to 10 recycles In summary we gathered the advantages of heterogeneous catalysis magnetic separation and enhanced catalytic activity of palladium promoted by phosphine ligands to synthesize a new catalyst for Suzuki cross-coupling reactions The Pd NP catalyst prepared on the phosphine-functionalized support was more active and selective than a similar Pd NP catalyst prepared on an amino-functionalized support (C) 2010 Elsevier Inc All rights reserved

引用

页码：382 / 389

页数：8

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