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

Paper ID Volume ID Publish Year Pages File Format Full-Text
51165 46833 2010 6 PDF Available
Title
In situ synthesis of a Pd–poly (1,8-diaminonaphthalene) nanocomposite: An efficient catalyst for Heck reactions under phosphine-free conditions
Abstract

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.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► A metal–polymer composite material was synthesized using an ‘in situ polymerization and composite formation approach’ and used as a catalyst for the Heck reaction under phosphine-free conditions.

Keywords
Pd nanoparticle; Metal–polymer composite; Heck reaction
First Page Preview
In situ synthesis of a Pd–poly (1,8-diaminonaphthalene) nanocomposite: An efficient catalyst for Heck reactions under phosphine-free conditions
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 2, 15 November 2010, Pages 116–121
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis