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    • 3. 发明授权
    • Process for producing substituted amines and a method for purifying
synthetic intermediates therefor
    • 制备取代胺的方法及其合成中间体的纯化方法
    • US5932759A
    • 1999-08-03
    • US800149
    • 1997-02-13
    • Yoshio MotoyamaNaoshi NagaiTakeshi IshitokuNoriaki Kihara
    • Yoshio MotoyamaNaoshi NagaiTakeshi IshitokuNoriaki Kihara
    • C07C239/20C07C261/00
    • C07C239/20
    • The present invention relates to a process for producing a substituted amine represented by the general formula (IV):R.sup.2 NHOR.sup.3 (IV)(wherein R.sup.2 represents a hydrogen atom, a hydrocarbon group or a heteroatom-containing hydrocarbon group, and R.sup.3 represents a hydrocarbon group or a heteroatom-containing hydrocarbon group), which comprises the steps of:(b) reacting a hydroxamic acid represented by the general formula (II):R.sup.1 CONHOH (II)(wherein R.sup.1 represents a hydrogen atom or a hydrocarbon group) in the presence of a base with a reaction reagent capable of introducing a hydrocarbon or a heteroatom-containing hydrocarbon group to an oxygen atom and/or a nitrogen atom to form a substituted hydroxamic acid represented by the general formula (III): ##STR1## (wherein R.sup.1, R.sup.2 and R.sup.3 possess the same meanings as defined above),(c) hydrolyzing said substituted hydroxamic acid (III) in the presence of a base or an acid to produce a substituted amine represented by the general formula (IV):R.sup.2 NHOR.sup.3 (IV)(wherein R.sup.2 and R.sup.3 possess the same meanings as defined above). The present further relates to a method for purifying a synthetic intermediate for said substituted amine.
    • 本发明涉及由通式(IV)表示的取代胺的制备方法:R2NHOR3(IV)(其中R2表示氢原子,烃基或含杂原子的烃基,R3表示烃基 或含杂原子的烃基),其包括以下步骤:(b)使通式(II)表示的异羟肟酸:R 1 CONHOH(II)(其中R 1表示氢原子或烃基) 的具有能够将烃或含杂原子的烃基引入氧原子和/或氮原子的反应试剂形成由通式(III)表示的取代的异羟肟酸的反应试剂:其中R1,R2和 R3具有与上述相同的含义),(c)在碱或酸的存在下水解所述取代的异羟肟酸(III)以产生由通式(IV)表示的取代胺:R2NHOR3(IV)(其中 R 2和R3具有与上述相同的含义)。 本发明还涉及纯化所述取代胺的合成中间体的方法。