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    • 7. 发明授权
    • Method for the preparation of a N-alkoxy-(tetra-or
hexahydro)-phthalimide and method for the preparation of a N-alkoxyamine
    • 制备N-烷氧基 - (四或六氢) - 邻苯二甲酰亚胺的方法及其制备方法
    • US5824804A
    • 1998-10-20
    • US928126
    • 1997-09-12
    • Joannes M. C. A. MuldersDominique M. C. CallantAnna M. C. F. Castelijns
    • Joannes M. C. A. MuldersDominique M. C. CallantAnna M. C. F. Castelijns
    • C07D209/48
    • C07D209/48Y02P20/582
    • Method for the preparation of N-alkoxy-(tetra- or hexahydro)-phthalimide according to formula I ##STR1## R.sub.1 being methyl or ethyl and R.sub.2 and R.sub.3 being each independently of one another hydrogen or alkyl with 1-4 C atoms or R.sub.2 and R.sub.3 together with the carbon atom to which they are bonded forming a ring with 5 or 6 C atoms, wherein the salt of the corresponding N-hydroxy-(tetrahydro- or hexahydro)-phthalimide according to formula II: ##STR2## with R.sub.2 and R.sub.3 as defined above and M being an alkali metal, is brought into contact with R.sub.1 Cl as alkylating agent, wherein R.sub.1 has the aforementioned meaning. The N-alkoxy-(tetra- or hexahydro)-phthalimide can afterwards be converted with the aid of hydroxylamine sulphate into the corresponding alkoxyamine after which the alkoxyamine obtained can be isolated. In this manner a simple and commercially attractive process for the preparation of O-(m)ethylhydroxylamine can be implemented.
    • 用于制备式I的N-烷氧基 - (四或六氢) - 邻苯二甲酰亚胺的方法,其中R 1和R 3各自独立地为氢或具有1-4个C原子的烷基或 R2和R3与它们所键合的碳原子一起形成具有5或6个C原子的环,其中根据式II的相应的N-羟基 - (四氢 - 或六氢) - 邻苯二甲酰亚胺的盐: 其中R 1和R 3如上所定义,M是碱金属,与R1Cl作为烷基化剂接触,其中R1具有上述含义。 N-烷氧基 - (四或六氢) - 邻苯二甲酰亚胺可以随后借助于硫酸羟胺转化成相应的烷氧基胺,之后可以分离获得的烷氧基胺。 以这种方式,可以实现用于制备O-(m)乙基羟胺的简单和商业上有吸引力的方法。