文章摘要
[DMAP-PEG1000-DIL][BF4]催化合成4H-苯并吡喃-4-亚磷酸酯
Synthesis of 4H-Chromen-4-yl-phosphonates Catalyzed by [DMAP-PEG1000-DIL][BF4]
投稿时间:2018-09-05  修订日期:2019-01-03
DOI:
中文关键词: 4H-苯并吡喃-4-亚磷酸酯  多组分反应  离子液体  水介质
英文关键词: 4H-chromen-4-yl-phosphonates  multi-component reaction  ionic liquid  aqueous media
基金项目:河南省科技攻关项目(182102310601);河南省高等学校重点科研项目(17B150007)
作者单位E-mail
王英磊 南阳理工学院 wangyinglei2014@163.com 
杜朝军 南阳理工学院  
史政海 南阳理工学院  
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中文摘要:
      以水溶性高分子聚乙二醇为原料,合成了一种聚乙二醇(PEG)接枝4-二甲氨基吡啶(DMAP)双阳离子功能化离子液体([DMAP-PEG1000-DIL][BF4])。采用1HNMR、13CNMR、FTIR、ESI-MS和TGA对其结构和热稳定性进行了表征。在[DMAP-PEG1000-DIL][BF4]用量为10%(以水杨醛的物质的量为基准,下同)、反应温度为100℃的条件下,不同取代基的水杨醛与丙二腈和亚磷酸三乙酯在水相中反应,制备了一系列4H-苯并吡喃-4-亚磷酸酯化合物,产率为83% ~ 94%。该反应以水为溶剂,催化剂可重复使用5次,符合绿色化学的基本要求。
英文摘要:
      A novel poly (ethylene glycol) grafted 4-dimethylaminopyridine dicationic functionalized ionic liquid ([DMAP-PEG1000-DIL][BF4]) was synthesized with water-soluble polymer poly (ethylene glycol) as raw material. Its structure and thermal stability were characterized by 1HNMR, 13CNMR, FTIR, ESI-MS and TGA. A series of 4H-chromen-4-yl-phosphonates in yields of 83%~94% were prepared by one-pot, three-component reactions of different substituted salicylaldehyde with malononitrile and triethyl phosphite in water under the conditions of [DMAP-PEG1000-DIL][BF4] dosage being 10 mol% different substituted salicylaldehyde and reaction temperature 100℃. This reaction used water as solvent and the catalyst could be reused for five times, which met the basic requirements of green chemistry.
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