Issue 8, 2012
From the journal:

Green Chemistry

Efficient and reusable amine-functionalized polyacrylonitrile fiber catalysts for Knoevenagel condensation in water†

Guowei Li,a   Jia Xiaoa  and  Wenqin Zhang*a  

* Corresponding authors

a Department of Chemistry, School of Sciences, Tianjin University, No. 92, Weijin Road, Tianjin 300072, P.R. China
E-mail: zhangwenqin@tju.edu.cn
Fax: +86-22-27403475
Tel: +86-22-27890922

Abstract

A series of new fiber catalysts has been synthesized by aminating a commercially available polyacrylonitrile fiber with polyamines such as diethylenetriamine and triethylenetetramine. These fiber catalysts can efficiently catalyze the Knoevenagel condensation of benzaldehyde and ethyl cyanoacetate in water (yields: 95–98%). The triethylenetetramine aminated fiber catalyst was used to catalyze the condensations of a wide range of aromatic aldehydes and active methylene compounds and in each case, this catalyst performed well with yields higher than 93%. This fiber catalyst also exhibited excellent reusability (up to 21 times) and photostability.

Graphical abstract: Efficient and reusable amine-functionalized polyacrylonitrile fiber catalysts for Knoevenagel condensation in water

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Article information

DOI
https://doi.org/10.1039/C2GC35483G
Article type
Paper
Submitted
30 Mar 2012
Accepted
14 May 2012
First published
14 May 2012

Green Chem., 2012,14, 2234-2242

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Efficient and reusable amine-functionalized polyacrylonitrile fiber catalysts for Knoevenagel condensation in water

G. Li, J. Xiao and W. Zhang, Green Chem., 2012, 14, 2234 DOI: 10.1039/C2GC35483G

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