Citation: Guo-Wei Li, Jia Xiao, Wen-Qin Zhang. Highly efficient Knoevenagel condensation reactions catalyzed by a proline-functionalized polyacrylonitrile fiber[J]. Chinese Chemical Letters, ;2013, 24(01): 52-54. shu

Highly efficient Knoevenagel condensation reactions catalyzed by a proline-functionalized polyacrylonitrile fiber

1.
Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, China

Corresponding author: Wen-Qin Zhang,
Received Date: 25 October 2012
Available Online: 30 November 2012

A new proline-functionalized fiber catalyst was employed for the first time to catalyze the Knoevenagel condensation reactions between aromatic aldehydes and ethyl cyanoacetate or malononitrile.This fiber catalyst exhibits a high efficiency(0.5-2 mol%of catalyst with yields of 90%-99%)and excellent reusability(up to 20 times)without the need for additional treatments.
- Polyacrylonitrile fiber,
- Proline,
- Supported catalysts,
- Knoevenagel condensation reaction
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  [15] The preparation and characterization of the fiber catalyst are similar as "J.Xiao, G.W.Li,W.Q.Zhang,Aldol reactions catalyzed by a proline functionalized polyacrylonitrile fiber,accepted by Chemical Research in Chinese Universities, ID:2012e236" .To avoid repetition,this section was placed in the supplementary material.
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沈阳化工大学材料科学与工程学院沈阳 110142