Production of 1-nitroanthraquinone and 1-aminoanthraquinone
    5.
    发明授权
    Production of 1-nitroanthraquinone and 1-aminoanthraquinone 失效
    生产1-硝基蒽醌和1-氨基蒽醌

    公开(公告)号:US4045454A

    公开(公告)日:1977-08-30

    申请号:US625475

    申请日:1975-10-24

    CPC分类号: C07C225/34

    摘要: 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.

    摘要翻译: 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 。

    Process for producing 5-amino-3-methylpyrazole
    6.
    发明授权
    Process for producing 5-amino-3-methylpyrazole 失效
    5-氨基-3-甲基吡唑的制备方法

    公开(公告)号:US5384409A

    公开(公告)日:1995-01-24

    申请号:US66033

    申请日:1993-05-26

    IPC分类号: C07D231/38

    CPC分类号: C07D231/38

    摘要: A process for producing 5-amino-3-methylpyrazole which comprises reacting hydrazine with a reaction intermediate containing at least one compound selected from the group consisting of 3-chloro-3-butenonitrile and 2,3-butadienenitrile, which intermediate is obtainable from 2,3-dichloropropene and hydrocyanic acid.A process for producing 5-amino-4-chloro-3-methylpyrazole which comprises chlorinating 5-amino-3-methylpyrazole obtainable by the above-mentioned reaction, in the presence of hydrochloric acid.

    摘要翻译: PCT No.PCT / JP92 / 01233 Sec。 371日期:1993年5月26日 102(e)日期1993年5月26日PCT提交1992年9月28日PCT公布。 出版物WO93 / 06088 日期:1993年4月1日。一种生产5-氨基-3-甲基吡唑的方法,其包括使肼与含有至少一种选自3-氯-3-丁烯腈和2,3-丁烯腈的化合物的反应中间体反应 ,该中间体可从2,3-二氯丙烯和氢氰酸获得。 一种生产5-氨基-4-氯-3-甲基吡唑的方法,该方法包括在盐酸存在下将可通过上述反应得到的5-氨基-3-甲基吡唑进行氯化。

    Process for producing aminophenyl-.beta.-hydroxyethylsulfone
    8.
    发明授权
    Process for producing aminophenyl-.beta.-hydroxyethylsulfone 失效
    制备氨基苯基-β-羟乙基砜的方法

    公开(公告)号:US4612394A

    公开(公告)日:1986-09-16

    申请号:US477443

    申请日:1983-03-21

    CPC分类号: C07C323/00 C07C317/00

    摘要: A process for producing aminophenyl-.beta.-hydroxyethylsulfone of the formula (I), ##STR1## which comprises the following steps: (1) condensing nitrohalobenzene with mercaptoethanol in the presence of an alkali hydroxide and at least one reaction medium selected from N-alkyl-substituted amides and sulfoxides to produce mononitrophenyl-.beta.-hydroxyethylsulfide of the formula (II): ##STR2## (2) oxidizing the mononitrophenyl-.beta.-hydroxyethylsulfide (II) to produce mononitrophenyl-.beta.-hydroxyethylsulfone of the formula (III): ##STR3## and (3) reducing the mononitrophenyl-.beta.-hydroxyethylsulfone to produce the aminophenyl-.beta.-hydroxyethylsulfone of the formula (I). This compound is useful as an intermediate for aminophenyl-.beta.-sulfatoethylsulfone represented by the following formula: ##STR4## which is an important intermediate for vinyl sulfone type reactive dyes largely used for dyeing cellulose fiber materials.

    摘要翻译: (I)的氨基苯基-β-羟基乙基砜的制备方法,其包括以下步骤:(1)在碱金属氢氧化物和至少一种选自以下的反应介质的存在下将硝基卤苯与巯基乙醇缩合 N-烷基取代的酰胺和亚砜,以制备式(II)的单硝基苯基-β-羟乙基硫化物:(II)(2)(2)氧化单硝基苯基-β-羟乙基硫醚(II)以制备单硝基苯基-β-羟乙基硫醚 式(III):(III)和(3)还原单硝基苯基-β-羟基乙基砜以制备式(I)的氨基苯基-β-羟基乙基砜。 该化合物可用作由下式表示的氨基苯基-β-磺基乙基砜的中间体:作为主要用于染色纤维素纤维材料的乙烯基砜型活性染料的重要中间体的“IMAGE”。