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以N,N,N′,N′-四甲基乙二胺、1,3-丙磺酸内酯为原料,经酸化合成了功能化离子液体N,N,N′,N′-四甲基-N,N′-二磺丙基二硫酸氢盐(TSIL)。TSIL离子液体兼具Brφnsted酸性官能团和季铵盐相转移催化剂的结构,能够实现水相中芳醛与5,5-二甲基-1,3-环己二酮反应,得到氢化氧杂蒽衍生物。结果表明,合成的TSIL具有较高的催化活性,在水相中于100℃下回流2～3h即可完成反应,产率可达80%～93%。反应生成的取代氢化氧杂蒽与离子液体的水溶液不相溶,通过简单的过滤可实现产物与催化体系的分离,简化了分离过程,方法操作简便、环境友好、催化剂可回收并重复使用。
The functionalized ionic liquids N, N, N ’, N’-tetramethylsilane (N, N, N’-tetramethylethylenediamine and 1,3-propane sultone) N, N’-disulfopropyl disulfate (TSIL). The TSIL ionic liquid has the structure of Brφnsted acidic functional group and quaternary ammonium salt phase transfer catalyst, and can realize the reaction of aromatic aldehyde with 5,5-dimethyl-1,3-cyclohexanedione in the aqueous phase to obtain the hydro xanthene derivative Things. The results show that the synthesized TSIL has high catalytic activity and can be completed in the aqueous phase by refluxing at 100 ° C for 2 ~ 3 h with a yield of 80% -93%. The substituted substituted xanthenes generated by the reaction are incompatible with the aqueous solution of the ionic liquid, the separation of the product and the catalytic system can be achieved by simple filtration, the separation process is simplified, the method is simple and convenient to operate, the environment is friendly, and the catalyst can be recovered and reused.