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Chemcial Industry and Engineering 2020, Vol. 37 Issue (2) :30-37    DOI: 10.13353/j.issn.1004.9533.20191017
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Synthesis of Pyran Heterocyclic Compounds Catalyzed by Phosphorylated Polyacrylonitrile Fibers
Li Mengmeng1, Zhang Chenlu1, Ma Ning1,2
1. Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300350, China;
2. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China

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Abstract The phosphorylated polyacrylonitrile fiber catalyst (PANEAPF) was synthesized by stable covalent bond grafting with cheap and easily available polyacrylonitrile fiber as the support, and it was used to catalyze the synthesis of pyran heterocyclic compounds. The catalytic activity of phosphorylated polyacrylonitrile fiber was evaluated by the three-component reaction of aromatic aldehyde, malononitrile and α-naphthol as well as the Friedel-Crafts reaction of 4-hydroxycoumarin and aromatic aldehyde. The effects of the fiber functionality, solvent, reaction temperature, reaction time and catalyst dosage on the catalytic reactions were investigated. The PANEAPF for the synthesis of pyran derivatives showed high catalytic activity and wide substrate applicability. In addition, the catalyst is easy to be recovered from the reaction system and still maintains good stability and catalytic activity after multiple cycles, which indicates the potential industrial application prospect of this green, efficient and recyclable fiber catalyst.
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Articles by authors
Li Mengmeng
Zhang Chenlu
Ma Ning
Keywordsheterogeneous catalysis;   polyacrylonitrile fiber;   recyclability;   reaction in water;   heterocyclic compounds     
Received 2019-04-02;
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Li Mengmeng, Zhang Chenlu, Ma Ning.Synthesis of Pyran Heterocyclic Compounds Catalyzed by Phosphorylated Polyacrylonitrile Fibers[J]  Chemcial Industry and Engineering, 2020,V37(2): 30-37
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