一种2-氯丙酸型杂多酸盐的绿色合成工艺

Green Esterification of a 2-Chloropropionic Heteropoly Acid Salt

以2,2-二氯丙酸、N-甲基咪唑、磷钨酸为原料,经过两步合成N-甲基咪唑-2-氯丙磷酸钨酸催化剂。当n(N-甲基咪唑-2-氯丙磷酸钨酸盐)∶n(正丁醇)=0.03%时,在100℃下重复使用4次,催化剂的酯化率保持在90%以上。

In this paper,2,2-dichloropropionic acid,N-methylimidazole and phosphotungstic acid are used as raw materials to synthesize N-methylimidazole-2-chloro propionate tungstate in two steps.When n(N-methylimidazole-2-chloro propionate tungstate)∶n(n-butanol)=0.03%,the catalyst was reused for 4 times at 100℃,and the esterification rate of the catalyst remained above 90%.