Size controlled synthesis of Pd nanoparticles in water and their catalytic application in C-C coupling reactions

被引：125

作者：

Sawoo, Sudeshna ^{[1
]}

Srimani, Dipankar ^{[1
]}

Dutta, Piyali ^{[1
]}

Lahiri, Rima ^{[1
]}

Sarkar, Amitabha ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, India

来源：

TETRAHEDRON | 2009年 / 65卷 / 22期

关键词：

Pd nanoparticle; Fischer carbene complex; PEG; Water; C-C coupling; SUZUKI-MIYAURA REACTION; LIGAND-FREE PALLADIUM; COPPER-FREE; HECK REACTIONS; IONIC LIQUIDS; ARYL HALIDES; RECYCLABLE CATALYST; SONOGASHIRA REACTION; PHOSPHINE-LIGANDS; BOND FORMATIONS;

D O I：

10.1016/j.tet.2009.03.062

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Catalytically active Pd nanoparticles have been synthesized in water by a novel reduction of Pd(II) with a Fischer carbene complex where polyethylene glycol (PEG) was used as stabilizer. PEG molecules wrap around the nanoparticles to impart stability and prevent agglomeration, yet leave enough surface area available on the nanoparticle for catalytic activity. Our method is superior to others in terms of rapid generation and stabilization of Pd nanoparticles in water with a cheap, readily available PEG stabilizer. The size of the nanoparticles generated can be controlled by the concentration of PEG in water medium. The size decreased with the increase in the PEG: Pd ratio. This aqueous nano-sized I'd is a highly efficient catalyst for Suzuki, Heck, Sonogashira, and Stille reaction. Water is Used as the only solvent for the coupling reactions. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：4367 / 4374

页数：8

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