The invention concerns a procedure for preparation of N-(&ohgr;-bromoalkyl)phthalimides which consists of reacting potassium phthalimide with an &agr;,&ohgr;-dibromoalkane without cosolvent, at a temperature from 50° C. to 130° C. by using a molar ratio of &agr;,&ohgr;-dibromoalkane to potassium phthalimide from 3 to 8, of cooling the reaction medium to about 80° C.-85° C., of washing it with water, of decanting, of removing excess &agr;,&ohgr;-dibromoalkane from the organic phase under reduced pressure, and then of crystallizing the N-(&ohgr;-bromoalkyl)phthalimide with a low boiling point alcohol.
该发明涉及一种制备N-(&ohgr;-
溴代烷基)邻苯二甲
酰亚胺的方法,包括在无共溶剂的情况下,将苯甲
酰亚胺钾与α,&ohgr;-二
溴代
烷烃反应,反应温度为50°C至130°C,使用α,&ohgr;-二
溴代
烷烃与苯甲
酰亚胺钾的摩尔比为3至8,将反应介质冷却至约80°C-85°C,用
水洗涤,倾析,将过量的α,&ohgr;-二
溴代
烷烃在减压下从有机相中去除,然后用低沸点醇结晶N-(&ohgr;-
溴代烷基)邻苯二甲
酰亚胺。