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    • 4. 发明授权
    • Process for production of 1-aminoanthraquinone
    • 1-氨基蒽醌的制备方法
    • US4840749A
    • 1989-06-20
    • US62638
    • 1987-06-16
    • Noriaki IkedaNoboru SugishimaYasushi FujiiShinji IkutaYoshiyuki NakanishiAkira Inoue
    • Noriaki IkedaNoboru SugishimaYasushi FujiiShinji IkutaYoshiyuki NakanishiAkira Inoue
    • C09B1/18
    • C09B1/18
    • A process for producing 1-aminoanthraquinone, which comprises(a) a step of oxidizing 1-nitronaphthalene in the liquid phase with an acidic aqueous solution containing a ceric ion as an oxidizing agent and separating crystals containing 5-nitro-1,4-naphthoquinone and the acidic aqueous solution containing a cerium ion from the resulting reaction mixture,(b) a step of subjecting the 5-nitro-1,4-naphthoquinone obtained in step (a) to Diels-Alder reaction with 1,3-butadiene in a solvent, precipitating crystals containing the resulting 5-nitro-1,4,4a,9a-tetrahydroanthraquinone, separating them by filtration, separating and recovering the unreacted 1-nitronaphthalene and the solvent in the filtrate in a separation tower, and recycling 1-nitronaphthalene to step (a) for use as the starting material and re-using the recovered solvent for the Diels-Alder reaction,(c) a step of reducing 5-nitro-1,4,4a,9a-tetrahydroanthraquinone obtained in step (b), separating crystals containing 1-aminoanthraquinone and purifying them, and(d) a step of electrolytically oxidizing the acidic aqueous solution containing a cerium ion separated in step (a) to convert the cerous ion in the acidic aqueous solution to a ceric ion and recycling the resulting acidic aqueous solution containing a ceric ion to step (a) for re-use as the oxidizing agent.
    • 一种生产1-氨基蒽醌的方法,其包括(a)用含有铈离子的酸性水溶液作为氧化剂在液相中氧化1-硝基萘并分离含有5-硝基-1,4-萘醌的晶体的步骤 和从所得反应混合物中含有铈离子的酸性水溶液,(b)使步骤(a)中得到的5-硝基-1,4-萘醌与1,3-丁二烯反应, 溶剂,沉淀含有所得5-硝基-1,4,4a,9a-四氢蒽醌的晶体,通过过滤分离,在分离塔中分离和回收滤液中的未反应的1-硝基萘和溶剂,并回收1- 硝基萘,步骤(a)用作原料并重新使用回收的溶剂进行狄尔斯 - 阿尔德反应,(c)将步骤(5)中得到的5-硝基-1,4,4a,9a-四氢蒽醌 b)分离含有1-氨基丁醇的晶体 并对其进行纯化,(d)在步骤(a)中分离出含有铈离子的酸性水溶液的电解氧化步骤,将酸性水溶液中的铈离子转化为铈离子,并将得到的含有 步骤(a)的铈离子用作再次用作氧化剂。