申请人:Degussa Aktiengesellschaft
公开号:US04751298A1
公开(公告)日:1988-06-14
There is disclosed a process for the production of 1,4-bis-[3-(3,4,5-trimethoxybenzyloxy)-propyl]-diazepane which consists of first reacting 3-aminopropanol with acrylonitrile and subsequently reacting in aqueous solution with formaldehyde and hydrocyanic acid or with formaldehyde and an alkali cyanide in the presence of alkali hydrogen sulfite to form cyanomethyl-(2-cyano-ethyl)-(3-hydroxy-propyl)-amine; hydrogenating the thus obtained reaction product in the presence of a hydrogenating catalyst and ammonia to 1 (3-hydroxy-propyl)-1,4-diazepane and reacting the latter compound for example with 3-halogen propanol or with allyl alcohol and introducing two 3,4,5-trimethoxy-benzoyl groups into the thus obtained reaction product by esterification.
披露了一种生产1,4-双-[3-(3,4,5-三甲氧苯基氧基)-丙基]-二氮杂环庚烷的方法,包括首先将3-氨基丙醇与丙烯腈反应,然后在水溶液中与甲醛和氰化氢或与甲醛和碱性氰化物在碱性亚硫酸氢盐存在下反应以形成氰甲基-(2-氰基乙基)-(3-羟基丙基)-胺;在氢化催化剂和氨的存在下氢化所得的反应产物为1-(3-羟基丙基)-1,4-二氮杂环庚烷,然后将后者化合物例如与3-卤代丙醇或烯丙醇反应,并通过酯化将两个3,4,5-三甲氧基苯甲酰基引入所得的反应产物中。