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    • 1. 发明授权
    • Production of 1-nitroanthraquinone and 1-aminoanthraquinone
    • 生产1-硝基蒽醌和1-氨基蒽醌
    • US4045454A
    • 1977-08-30
    • US625475
    • 1975-10-24
    • Eiji YamadaAkira FukasawaShinzaburo Masaki
    • Eiji YamadaAkira FukasawaShinzaburo Masaki
    • C07C225/34C07C79/10C07C79/36C09B1/00
    • C07C225/34
    • A process for producing 1-nitroanthraquinone with high purity which comprises treating crude 1-nitroanthraquinone containing as the main impurities dinitroanthraquinones and .beta.-nitroanthraquinone with an alkali sulfite in an aqueous medium under heating and which is characterized in that the crystals of the crude 1-nitroanthraquinone are pulverized by the aid of a pulverizer, a fine pulverizer or an ultra-fine pulverizer prior to and/or during the treatment with the aqueous alkali sulfite; and a process for producing 1-aminoanthraquinone which comprises subjecting the reaction mixture obtained by the said treatment with the alkali sulfite solution mentioned above, if necessary after further fine pulverization, to a reaction with a reducing agent, or ammonia or an aliphatic or aromatic amine.
    • 一种高纯度的1-硝基蒽醌的制备方法,其特征在于,在加热下,在水性介质中用碱金属亚硫酸盐处理含有二硝基蒽醌和β-硝基蒽醌的粗1-硝基蒽醌,其特征在于粗1- 在用碱金属亚硫酸盐处理之前和/或处理期间,借助于粉碎机,细粉碎机或超细粉碎机将硝基蒽醌粉碎; 以及一种1-氨基蒽醌的制备方法,该方法包括在进一步精细粉碎后,将上述处理得到的反应混合物用上述碱金属亚硫酸盐溶液与还原剂或氨或脂族或芳族胺反应 。