PROCESS FOR THE PREPARATION OF BRONOPOL
    4.
    发明申请
    PROCESS FOR THE PREPARATION OF BRONOPOL 有权
    制备溴酚的方法

    公开(公告)号:US20140066662A1

    公开(公告)日:2014-03-06

    申请号:US14012411

    申请日:2013-08-28

    Inventor: Jacob OREN

    CPC classification number: C07C201/10 C07C201/12 C07C205/15

    Abstract: The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.

    Abstract translation: 本发明提供了一种制备青霉酚的方法,该方法包括向反应容器中加入水,溴氰菊酯,硝基甲烷和多聚甲醛,在搅拌下逐渐向碱性物质中加入碱,使反应完成,并从反应混合物中分离出丙三醇。

    Process for the nitration of anthraquinones
    7.
    发明授权
    Process for the nitration of anthraquinones 失效
    硝化蒽醌的方法

    公开(公告)号:US3968130A

    公开(公告)日:1976-07-06

    申请号:US300689

    申请日:1972-10-25

    Applicant: Istvan Szekely

    Inventor: Istvan Szekely

    CPC classification number: C07C205/47 C07C201/08 C07C2103/24

    Abstract: The invention relates to a process for the manufacture of anthraquinones which are mononitrated in the .alpha.-position, especially 1-nitroanthraquinone, wherein an anthraquinone which possesses at least 1 free .alpha.-position and is optionally substituted in the other .alpha.-position with halogen, preferably chlorine, or with hydroxyl groups, but especially the unsubstituted anthraquinone, is nitrated with concentrated nitric acid without further additives adiabatically, or at temperature above 40.degree.C isothermically, and optionally under pressure.

    Abstract translation: 本发明涉及一种制备在α-位上单硝化的蒽醌的方法,特别是1-硝基蒽醌,其中具有至少1个游离α-位且在另一个α-位上被卤素任选取代的蒽醌, 优选氯,或羟基,但特别是未取代的蒽醌,用浓硝酸进行硝酸化,无另外的添加剂绝热,或在40℃以上的温度等温和任选在压力下进行硝化。

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