Introduction of bis-imidazolium dihydrogen phosphate as a new green acidic ionic liquid catalyst in the synthesis of arylidene malononitrile, ethyl (E)-3-(aryl)-2-cyanoacrylate and tetrahydrobenzo[b]pyran derivatives
作者:Zahra Rahmatizadeh-Pashaki、Nader Daneshvar、Farhad Shirini
DOI:10.1007/s13738-021-02177-0
日期:——
of techniques including FT-IR, 1H, 13C, 31P NMR and mass spectroscopy techniques. After characterization, this compound was used as an affordable and recyclable catalyst in the synthesis of arylidene malononitrile, ethyl (E)-3-(aryl)-2-cyanoacrylate and tetrahydrobenzo[b]pyran derivatives. The procedure had several advantages such as excellent yields, short reaction times, simple workup and use of a
在这项工作中,[H2-Bisim][H2PO4]2 作为一种新型的双咪唑基酸性离子液体已被合成并通过多种技术进行表征,包括 FT-IR、1H、13C、31P NMR 和质谱技术。表征后,该化合物被用作合成亚芳基丙二腈、(E)-3-(芳基)-2-氰基丙烯酸乙酯和四氢苯并[b]吡喃衍生物的经济实惠且可回收的催化剂。该程序具有几个优点,例如产率高、反应时间短、后处理简单以及使用非昂贵且无毒的化合物作为催化剂。此外,制备的离子液体可以回收再利用,而在所研究的反应中不会显着降低其催化活性。