A method for preparing N,N′-bis(2-cyanoethyl-1,2-ethylenediamine involves using glycol ether as a catalyst for synthesis reaction in which ethylenediamine and acrylonitrile at a molar ratio of 1:1.9-2.1 are reactant that react at 20-70°C to prepare N,N′-bis(2-cyanoethyl)-1,2-ethylenediamine; the method improves the yield to 98.15-98.98%; and the used glycol ether may be filtered and recycled, thereby saving costs and reducing environmental pollution.
一种制备N,N′-双(2-
氰乙基)-1,2-
乙二胺的方法涉及使用
乙二醇醚作为催化剂,用
乙二胺和
丙烯腈以摩尔比1:1.9-2.1进行反应,在20-70°C下反应制备N,N′-双(2-
氰乙基)-1,2-
乙二胺;该方法提高了产率至98.15-98.98%;所使用的
乙二醇醚可以进行过滤和循环利用,从而节约成本并减少环境污染。