摘要
通过N-烷基化反应制备了中间产物氯化-1-丁基-3-甲基咪唑[BMIM]Cl离子液体,得到较佳的制备条件。引入微波辅助改进了[BMIM]Cl合成方法。同时在超声波辅助下,通过离子交换制备了亲水性离子液体1-丁基-3-甲基咪唑四氟硼酸盐[BMIM]BF4以及憎水性离子液体1-丁基-3-甲基咪唑六氟磷酸盐[BMIM]PF6。结果发现,微波辅助和超声波辅助可以加速反应速度。产物结构用IR和1HNMR进行表征。
Prepared intermediate product of 1-butyl-3-methylimidazolium chloride through N-alkylation reaction and got better preparation conditions. Microwave was used to improve the synthesis method of [BMIM] Cl. At the same time, hydrophilic ionic liquid 1-butyl-3- methylimidazolium tetrafluoroborate [BMIM]BF4 ionic liquid and hydrophobic ionic liquid 1-butyl-3- methylimidazolium hexafluorophosphate [BMIM]PF6 ionic liquid were prepared through ion exchange by the assistant of ultrasonic. Results showed that microwave and ultrasonic could accelerate reactions. Products configuration were measured by IR and 1H NMR.
