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Functionalised Chitosan as a Green, Recyclable, Supported Catalyst for the Copper-Catalysed Ullmann C-N Coupling Reaction in Water

Paper ID Volume ID Publish Year Pages File Format Full-Text
49475 46746 2015 4 PDF Available
Title
Functionalised Chitosan as a Green, Recyclable, Supported Catalyst for the Copper-Catalysed Ullmann C-N Coupling Reaction in Water
Abstract

•Copper-catalysed Ullmann C-N coupling reaction in water.•Chitosan-supported 1H-pyrrole-2-carbohydrazide (CSP) was used as ligand.•Heterogeneous CuO/ CSP catalyst system showed superior catalytic activity.•The catalyst system could be reused for six runs and remain moderately catalytic.

Functionalised chitosan was synthesised and combined with CuO to yield a recyclable, environment-friendly heterogeneous catalytic system for the Ullmann C-N coupling reaction in water. Various aromatic amines can be readily prepared from both electron-withdrawing and electron-donating aryl halides with anilines, benzylamine, aliphatic amines and imidazole with good to excellent yields, even for the hindered o-substituted aryl halides.

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Keywords
copper; Ullmann C-N coupling reaction; heterogeneous catalysis; green chemistry
First Page Preview
Functionalised Chitosan as a Green, Recyclable, Supported Catalyst for the Copper-Catalysed Ullmann C-N Coupling Reaction in Water
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 60, 5 February 2015, Pages 92–95
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis