【摘要】 高分子咪唑盐1是一种新型高分子相转移催化剂,具有制备简单、稳定性好、催化活性高等特点。TG分析表明,其分解温度可达350℃左右。在微波作用下,采用此高分子咪唑盐相转移催化剂于中等极性的非质子溶剂中成功制备了系列含氟硝基苯类化合物,其收率为72.1%～94.4%,反应时间较常规加热最多可缩短60%以上,拓宽了卤素交换氟化反应溶剂的选择空间。选用中等极性溶剂,反应中还可突出地体现出微波对反应的“非热效应”。更多还原

【Abstract】 Polymer imidazole salt 1 is a new kind of polymer phase transfer catalyst,which has the advantages of convenience for preparation,good thermal stability,and high catalytic activity.Its decomposition temperature determined by TGA is about 350 ℃.Some fluorinitrobenzene derivatives were prepared via halex fluorination catalyzed by polymer imidazole salt from corresponding chloronitrobenzene derivatives under the irradiation of microwave.The yield of products was in a range of 72.1%~94.4%,and the reaction time can be shortened by more than 60% in comparison with conventional heating.More aprotic solvents can be used in halogen-exchange fluorination under the irradiation of microwave.In addition,"non-thermal effect" can be shown obviously when the reaction is carried out in medium polar aprotic solvents.更多还原