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    • 92. 发明授权
    • Process for the preparation of a mixture of chelating agents
    • 制备螯合剂混合物的方法
    • US09090536B2
    • 2015-07-28
    • US13639575
    • 2011-05-31
    • Reijo AkselaJussi Rissanen
    • Reijo AkselaJussi Rissanen
    • C07C213/06C07C227/10C07C227/06C07C227/16
    • C07C227/10C07C227/06C07C227/16C07C229/24
    • The present invention relates to a process for the preparation of a mixture of aspartic acid diethoxy succinate and an amino acid derivative of the general formula (I) wherein n is 1-10, m is 0 or 1, and R is hydrogen or an alkali metal or alkaline earth metal ion, comprising reacting maleate with diethanol amine under alkaline conditions in the presence of a lanthanoid catalyst to form aspartic acid diethoxy succinate followed by adding aspartic acid which reacts with unreacted maleate to form imino disuccinic acid, i.e. an amino acid derivative of formula (I) wherein m is 0, or by adding a diamine derivative of the general formula (II) NH2(CH2)nNH2 wherein n is as defined above, which reacts with unreacted maleate to form an amino acid derivative of formula (I) wherein m is 1 and n is as defined above.
    • 本发明涉及一种制备天冬氨酸二乙氧基琥珀酸酯与通式(I)的氨基酸衍生物的混合物的方法,其中n为1-10,m为0或1,R为氢或碱 金属或碱土金属离子,包括在碱性条件下在镧系元素催化剂存在下使马来酸酯与二乙醇胺反应,形成天冬氨酸二乙氧基琥珀酸酯,然后加入与未反应的马来酸酯反应形成亚氨基二琥珀酸的天冬氨酸,即氨基酸衍生物 或通过加入通式(II)的二胺衍生物NH 2(CH 2)n NH 2,其中n如上定义,其与未反应的马来酸酯反应以形成式(I)的氨基酸衍生物 ),其中m是1,n如上定义。
    • 97. 发明申请
    • PROCESS FOR THE PREPARATION OF A MIXTURE OF CHELATING AGENTS
    • 制备混合剂混合物的方法
    • US20130204035A1
    • 2013-08-08
    • US13639575
    • 2011-05-30
    • Reijo AkselaJussi Rissanen
    • Reijo AkselaJussi Rissanen
    • C07C227/10
    • C07C227/10C07C227/06C07C227/16C07C229/24
    • The present invention relates to a process for the preparation of a mixture of aspartic acid diethoxy succinate and an amino acid derivative of the general formula (I) wherein n is 1-10, m is 0 or 1, and R is hydrogen or an alkali metal or alkaline earth metal ion, comprising reacting maleate with diethanol amine under alkaline conditions in the presence of a lanthanoid catalyst to form aspartic acid diethoxy succinate followed by adding aspartic acid which reacts with unreacted maleate to form imino disuccinic acid, i.e. an amino acid derivative of formula (I) wherein m is 0, or by adding a diamine derivative of the general formula (II) NH2(CH2)nNH2 wherein n is as defined above, which reacts with unreacted maleate to form an amino acid derivative of formula (I) wherein m is 1 and n is as defined above.
    • 本发明涉及一种制备天冬氨酸二乙氧基琥珀酸酯与通式(I)的氨基酸衍生物的混合物的方法,其中n为1-10,m为0或1,R为氢或碱 金属或碱土金属离子,包括在碱性条件下在镧系元素催化剂存在下使马来酸酯与二乙醇胺反应,形成天冬氨酸二乙氧基琥珀酸酯,然后加入与未反应的马来酸酯反应形成亚氨基二琥珀酸的天冬氨酸,即氨基酸衍生物 或通过加入通式(II)的二胺衍生物NH 2(CH 2)n NH 2,其中n如上定义,其与未反应的马来酸酯反应以形成式(I)的氨基酸衍生物 ),其中m是1,n如上定义。