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合成了一系列对芳香亲核取代反应 (氟代反应 )有良好反应活性的 4-二烷基氨基吡啶盐系列相转移催化剂 ,研究了该系列催化剂的催化活性 ,并筛选出活性最佳的催化剂 .在催化活性最好的 4-(二甲氨基 ) -N-(2 -乙基 )己基吡啶盐 (Cat2 )作用下 ,对氯硝基苯氟化 ,得率 98.6% ,反应时间 1 .5 h.
A series of 4-dialkylaminopyridinium salt phase transfer catalysts with good reactivity to aromatic nucleophilic substitution reaction (fluorination reaction) were synthesized. The catalytic activity of this series of catalysts was studied and the most active The catalyst was fluorinated on the chloronitrobenzene under the catalysis activity of the best catalytic activity of 4- (dimethylamino) -N- (2-ethyl) hexylpyridinium salt (Cat2) with a yield of 98.6% and a reaction time of 1 .5 h.