[1,2-bisPyEt]Cl_2-XAlCl_3离子液体催化合成苯基二氯化膦方法研究

Study on Synthesis Method of Dichlorophenylphosphine Catalyzed by [1,2-bisPyEt]Cl_2-XAlCl_3 Ionic Liquids

以[1,2-bisPyEt]Cl2-XAlCl3(1,2-bisPyEt=1,2-二吡啶基乙烷阳离子)离子液体催化苯与PCl3反应合成苯基二氯化膦(DCPP),对催化剂的催化活性、分离方法、催化剂的可回收性、反应物组成和反应时间对反应的影响进行了研究与探讨。研究表明,用该离子液体催化时具有催化剂用量少、产品可直接分离,反应时间短等特点。提出了一种催化机理,对反应过程中催化剂可重复利用以及催化剂重复使用时失活等现象作了解释。

The Friedel-Crafts reaction of PCl3 and benzene in [1,2-bisPyEt]Cl2-XAlCl3 ionic liquids was investigated for green synthesis of dichlorophenylphosphine（DCPP）. A simple product isolation procedure was achieved,and the effects of ILs composition,reactant composition, reaction time and quantity of ILs on this reaction were studied. The ionic liquids rendered this reaction a green character. A catalytic mechanism was proposed as well.