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在1-丁基-3-甲基咪唑四氟硼酸盐([Bmim]BF4)离子液体中,研究不同取代基的苯氧负离子与溴代异丙烷亲核取代反应及不同取代基的苯甲醛与脲、乙酰乙酸乙酯亲核加成反应活性,通过测定反应转化率获得离子液体体系中不同取代基的电子效应.研究发现氯取代基表现出推电子性质,进而提出在离子液体体系中带苯环结构的反应物可与含杂芳环离子液体形成多层大π配合物结构,大π配合物影响了极性基团的正常溶剂化效应形成,产生独特的离子层溶剂效应.
In the ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim] BF4), the nucleophilic substitution reaction of phenoxyanions with brominated isopropylenes and the different substituted benzaldehydes With the reaction of urea and ethyl acetoacetate, the electronic effect of different substituents in the ionic liquid system was obtained by measuring the conversion rate of the reaction.It was found that the chlorine substituents showed electron pushing properties, The reactants of benzene ring structure can form multi-layer large π complexes with heteroaromatic ring ionic liquids, and the large π complexes affect the formation of normal solvating effect of polar groups, resulting in unique ion-layer solvent effect.