Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene
    153.
    发明授权
    Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene 有权
    从1,3,5-三氯苯合成3,5-二氯苯甲醚的方法

    公开(公告)号:US08901361B2

    公开(公告)日:2014-12-02

    申请号:US13522291

    申请日:2011-01-12

    Abstract: A method for synthesizing 3,5-dichloroanisole from 1,3,5-trichloro-benzene is proved. The method may comprises: a) the reaction between 1,3,5-trichloro-benzene and a methanolate of an alkaline or alkaline-earth metal in a first solvent chosen from among dimethylsulfoxide and 1,1,3,3-tétramethylurea, b) the precipitation of the product resulting from step a) in a second solvent which is not included among substances considered carcinogenic, mutagenic and/or toxic for reproduction by Regulation (EC) no 1272/2008 of the European Parliament and of the Council of 16 Dec. 2008, then c) the recovery of the precipitate thus obtained. The method may be applied to synthesize 1,3,5-triamino-2,4,6-trinitrobenzene in which 3,5-dichloroanisole is an intermediate product.

    Abstract translation: 证明了从1,3,5-三氯苯合成3,5-二氯苯甲醚的方法。 该方法可以包括:a)在选自二甲基亚砜和1,1,3,3-三甲基脲的第一溶剂中的1,3,5-三氯苯和碱金属或碱土金属的甲醇盐之间的反应,b )通过欧盟议会和理事会第1272/2008号条例(EC)第1272/2008号规定的步骤a)在第二溶剂中的沉淀,该第二溶剂不包括在被认为是致癌,致突变和/或有毒生殖的物质中 然后c)如此获得的沉淀物的回收。 该方法可用于合成其中3,5-二氯苯甲醚为中间产物的1,3,5-三氨基-2,4,6-三硝基苯。

    Process For The Preparation Of Bronopol
    157.
    发明申请
    Process For The Preparation Of Bronopol 有权
    Bronopol的制备方法

    公开(公告)号:US20110065964A1

    公开(公告)日:2011-03-17

    申请号:US12735886

    申请日:2009-02-26

    Applicant: Jacob Oren

    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。

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