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    • 81. 发明专利
    • JPH05339214A
    • 1993-12-21
    • JP14393992
    • 1992-06-04
    • MITSUI TOATSU CHEMICALS
    • KAMEOKA TAIJITAKAGI MASATOSHIKATO TOSHIOHASEYAMA RYUJI
    • C07C209/40C07C211/49
    • PURPOSE:To produce the subject compound in a high yield and in a high purity by catalytically reducing nitroacetophenone oxime readily producible from nitroacetophenone as a raw material in the presence of a reducing catalyst under CO2. CONSTITUTION:Nitroacetophenone oxime of formula I (nitro group is o-position, m-position or p-position) is catalytically reduced in the presence of carbon dioxide in an organic solvent to obtain alpha-(aminophenyl)ethylamine of formula II. In the reaction the product can be obtained as the carbonate salt of alpha-(aminophenyl)ethylamine in a stable form, because the carbon dioxide turns into carbonic acid in the presence of water. Various intermediates such as amines or imines produced in the reduction reaction are stabilized as carbonate salts only by introducing the carbon dioxide into the reaction system, whereby the decompositions of the products and side reactions are suppressed. alpha-(Aminophenyl)ethylamine is useful as a curing agent for epoxy resins, polyurethane resins or polyurea resins, as a raw material for polyamides or polyimides, etc.