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 ).
This paper studied the changes in dyeing properties of wool fiber through pretreatment of ethylamine.
本文就用乙二胺处理羊毛织物后的染色性能变化进行了研究.