In situ synthesis of a Pd-poly (1,8-diaminonaphthalene) nanocomposite An efficient catalyst for Heck reactions under phosphine-free conditions

被引：27

作者：

Islam, Rafique U. ^{[2
]}

Witcomb, Michael J. ^{[3
]}

Scurrell, Michael S. ^{[4
]}

Van Otterlo, Willem ^{[4
]}

Mallick, Kaushik ^{[1
]}

机构：

[1] MINTEK, Adv Mat Div, ZA-2125 Randburg, South Africa

[2] Birla Inst Technol, Dept Appl Chem, Ranchi 835215, Bihar, India

[3] Univ Witwatersrand, Microscopy & Microanal Unit, ZA-2050 Johannesburg, South Africa

[4] Univ Witwatersrand, Sch Chem, Inst Mol Sci, ZA-2050 Johannesburg, South Africa

来源：

CATALYSIS COMMUNICATIONS | 2010年 / 12卷 / 02期

关键词：

Pd nanoparticle; Metal-polymer composite; Heck reaction; SUZUKI REACTION; NANOPARTICLES; POLYANILINE; CLUSTERS; FILM;

D O I：

10.1016/j.catcom.2010.08.005

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：

Polymerization of 1 8-diaminonaphthalene was performed using palladium acetate as an oxidizing agent During the oxidative polymerization process the electrons liberated reduced the palladium (II) ions with the formation Pd nanoparticles these colloidal particles being stabilized within the poly (1 8 diaminonaphthalene) matrix Electron microscope images revealed that the palladium particles were well dispersed in the polymer matrix and had an average diameter of 2 5 nm The metal-polymer composite material was initially tested for the coupling of iodobenzene with alkene (methyl acrylate) in the presence of a base The yield of the substituted alkene derivative was found to be excellent A series of iodo- and bromobenzene derivatives were tested for the coupling reaction with different alkenes A coupled product was produced with high TOF values proving the efficiency of the composite material as an efficient catalyst for the Heck reaction under phosphine-free conditions (C) 2010 Elsevier B V All rights reserved

引用

页码：116 / 121

页数：6

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