A method for making N,N′-bis(3-aminopropyl)-1,2-ethylenediamine which comprises reacting acrylonitrile and ethylenediamine in about a 2:1 molar ratio to make a N,N′-bis(cyanoethyl)-1,2-ethylenediamine reaction product and hydrogenating the reaction product, the improvement for improving the selectivity of the reactions to N,N′-bis(2-cyanoethyl)-ethylenediamine and to N,N′-bis(3-aminopropyl)-1,2-ethylenediamine which comprises reacting acrylonitrile and ethylenediamine in the presence of 2-30 wt % water, based on total reactants.
一种制备N,N'-双(3-
氨丙基)-1,2-
乙二胺的方法,包括在大约2:1的摩尔比下反应
丙烯腈和
乙二胺,以制备N,N'-双(
氰乙基)-1,2-
乙二胺反应产物,并对反应产物进行氢化,改进提高反应选择性以制备N,N'-双(2-
氰乙基)-
乙二胺和N,N'-双(3-
氨丙基)-1,2-
乙二胺的方法,包括在总反应物质的基础上加入2-30重量%的
水,使
丙烯腈和
乙二胺在
水的存在下进行反应。