室温离子液体1-丁基-3-甲基咪唑四氟硼酸盐的制备及其在有机合成中的应用

Preparation of room temperature ionic liquids (RTILs) 1-butyl-3-methylimidazolium tetrafluoroborate and their applications in organic synthesis

目的采用无溶剂微波法制备室温离子液体1丁基3甲基咪唑四氟硼酸盐,并以其作反应溶剂和催化剂合成乙酸苄酯。方法在家用微波炉中间歇式加热。结果与结论在家用微波炉中采用无溶剂、间歇加热方式制备得到1丁基3甲基咪唑四氟硼酸盐,该法反应时间短、收率高;通过引入室温离子液体作为溶剂和催化剂,实现了由醋酸钠与氯苄在相对温和条件下及较短的反应时间内微波法合成了乙酸苄酯,并获得较高收率。

Objective To prepare room temperature ionic liquids 1-butyl-3- methylimidazolium tetrafluoroborate using microwaves through the solvent-free route and to synthesize benzyl acetate with RTILs as solvent and catalyst . Methods Intermittent heating in microwave oven was applied. Results and Conclusions 1- Butyl-3-methyl-imidazolium tetrafluoroborate is prepared by heating intermittently in the microwave oven. This solvent-free reaction is carried out quickly in high yield. By employing RTIL as solvent and catalyst, benzyl acetate was obtained via microwavation from sodium acetate and benzyl chloride under mild condition and short reaction time in a high yield.