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    • 5. 发明授权
    • Preparation of N-[2-(carboxymethoxy) ethyl]-N-(carboxymethyl) glycine
    • N- [2-(羧基甲氧基)乙基] -N-(羧甲基)甘氨酸的制备
    • US06627772B2
    • 2003-09-30
    • US10081200
    • 2002-02-22
    • Phillip S. AtheyDavid A. Wilson
    • Phillip S. AtheyDavid A. Wilson
    • C07C22922
    • C07C255/25C07C227/26C07C229/12
    • Compounds represented by the formula wherein R and R1 independently represent H, —CH2CN or —CH2CO2X, with the proviso that R and R1 can not be both H or —CH2CO2X; and X represents hydrogen, an alkali metal or alkaline earth metal are disclosed. These compounds are useful as intermediate compounds in the preparation of N-[2-(carboxymethoxy)ethyl]-N-(carboxy-methyl)glycine. These intermediates can be formed by contacting 3-morpholinone with glycolonitrile under alkaline conditions to form an aminonitrile which can be hydrolyzed and contacted with additional glycolonitrile to form the nitrile intermediate which can be converted to N-[2-(carboxymethoxy)ethyl]-N-(carboxymethyl)glycine via hydrolysis.
    • 由式R和R 1表示的化合物独立地表示H,-CH 2 CN或-CH 2 CO 2 X,条件是R和R 1不能同时为H或-CH 2 CO 2 X; X表示氢,碱金属或碱土金属。 这些化合物可用作制备N- [2-(羧基甲氧基)乙基] -N-(羧基 - 甲基)甘氨酸的中间体化合物。 这些中间体可以通过在碱性条件下使3-吗啉酮与乙醇腈接触形成氨基腈,其可以水解并与另外的乙醇腈接触以形成腈中间体,其可以转化为N- [2-(羧基甲氧基)乙基] -N - (羧甲基)甘氨酸通过水解。