(-)-龙脑手性离子液体的合成

摘要

以(-)-龙脑为手性源,与溴乙酰溴通过酯化反应合成溴代乙酸龙脑酯(2);2与4,4'-联吡啶发生取代反应引入两个手性中心制得新型手性离子液体——N,N'-双(龙脑氧甲酰亚甲基)联吡啶.二溴(3.2Br-);3.2Br-与四氟硼酸钾或六氟磷酸钾盐进行阴离子交换制得相应的手性离子液体3.2BF4-或3.PF6-.3.2Br-的结构经1H NMR,13C NMR和IR表征.%A novel chiral ionic liquid, ( - )-N,N'-dimenthyl-4,4'-dipyridinecarboxylate bromonium (3 ? 2Br~), was synthesized by esterification of chiral precursor ( - )-borneol with bromine acetyl bromide, then substitution reaction of 4,4'-dipyridine. Br- of 3 ? 2Br~ was exchanged with BF4- or PF6' to obtain 3 ? 2BF4- or 3 ? 2PF6-. The structrue of 3 ? 2Br- was characterized by 1H NMR, 13 C NMR and IR.