室温离子液体催化合成聚对苯乙酰

Synthesis of Poly(p-Phenylactyl) Catalyzed by Room Temperature Ionic Liquid

研究了由1,3-二烷基咪唑和烷基吡啶与无水三氯化铝构成的室温离子液体作为溶剂催化剂,通过苯乙酰氯发生Friedel-Crafts聚合反应,合成聚对苯乙酰的方法。实验结果表明,在室温离子液体中,苯乙酰氯的Friedel-Crafts聚合反应可在20～25℃下顺利进行,聚对苯乙酰收率高于90%,并且Mw/Mn高达16500/7890。光谱分析数据证实:苯乙酰氯分子间的Friedel-Crafts聚合反应产物为聚对苯乙酰。

Poly (p-phenylacetyl) was synthesized through homogeneous Friedel-Crafts polymerization of chloride phenylactyl catalyzed by 1,3-dialyklimidazolium and alkylpyridium/AlCl_3 ionic liquid. The experimental results indicate that chloride phenylactyl polymerization temperature can be controlled 20～25 ℃, the yield of poly(p-phenylacetyl) is over 90% and its Mw/Mn reachs 16 500/7 890.The analytic results indicate that Friedel-Crafts polymerization takes place in para-position.