Medicine intermediate N - ethylethylenediamine ( NEED ) was synthesized from acrylamide and ethylamine by addition reaction and Hofmann rearrangement.
以丙烯酰胺为起始原料,经乙胺加成后,再经Hofmann重排两步反应后合成了药物中间体N - 乙基乙二胺 ( NEED ).
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IEF was prepared by introducing - NH 2 onto the grafting fiber through Hofmann degradation reaction.
通过Hofmann降级反应,在接枝产物上引入胺基,制备成弱碱性阴离子交换纤维.
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