离子液体在亲核取代反应中的应用

The Use of Ionic Liquids in the Nucleophilic Displacement Reactions

利用离子液体作为溶剂和兼作相转移催化剂,溴化苄与亲核试剂叠氮化钠反应制得叠氮化苄,反应操作简便,时间短,产物易于分离,离子液体在催化性能上要优于常用的季铵盐,而且还可以重复使用。

Benzyl azide is synthesized by a displacement reaction of benzyl bromide and sodium azide with the ionic liquid [BMIM] BF1 acted as solvent and catalyst. The reaction has such advantages as simple procedure, short reaction time, and easy separation. The ionic liquid is better than conventional quaternary ammonium salts on the catalytic activity and can be recycled.