会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 22. 发明授权
    • Method for producing (S,S)-N,N′-ethylenediaminedisuccinic acid, analogous compounds or salts thereof
    • (S,S)-N,N'-乙二胺二琥珀酸的类似化合物或其盐的制备方法
    • US06437181B1
    • 2002-08-20
    • US09581530
    • 2000-11-27
    • Alfred OftringChristian OttBirgit Potthoff-Karl
    • Alfred OftringChristian OttBirgit Potthoff-Karl
    • C07C22900
    • C07C303/24C07C227/18C07C305/06C07C229/26
    • The invention describes a process for the preparation of (S,S)-N,N′-ethylenediaminedisuccinic acid or analogous compounds or their salts by reaction of L-aspartic acid, L-glutamic acid or L-cysteic acid with 1,2-bissulfooxyethane, 1,3,2-dioxathiolane 2,2-dioxide or mixtures thereof or 1,3-bissulfooxy-2-hydroxypropane in the presence of a base, and optional subsequent acidification with an acid. Also described is a process for the preparation of (S,S)-N,N′-ethylenediaminedisuccinic acid or analogous compounds or their salts by reaction of N-(2-sulfooxyethyl)-L-aspartic acid or its salts with L-aspartic acid or corresponding compounds based on L-glutamic acid, L-cysteic acid and/or 1,3-bissulfooxy-2-hydroxypropane in the presence of a base, and optional subsequent acidification with an acid.
    • 本发明描述了通过L-天冬氨酸,L-谷氨酸或L-半胱氨酸与1,2-二氨基丁酸的反应来制备(S,S)-N,N'-乙二胺二琥珀酸或类似化合物或其盐的方法, 双磺酰氧基乙烷,1,3,2-二氧硫杂环戊烷2,2-二氧化物或其混合物或1,3-双磺酰氧基-2-羟基丙烷在碱存在下进行,随后可任意用酸酸化。还描述了一种制备方法 通过N-(2-磺氧基乙基)-L-天冬氨酸或其盐与L-天冬氨酸或相应的基于L-天冬氨酸的化合物的反应而产生的(S,S)-N,N'-乙二胺二琥珀酸或类似化合物或其盐, 谷氨酸,L-半胱氨酸和/或1,3-双磺酰氧基-2-羟基丙烷,在碱的存在下,任选随后用酸酸化。