PROCESS FOR PREPARING 3-METHYLSULFONYLPROPIONITRILE
    7.
    发明申请
    PROCESS FOR PREPARING 3-METHYLSULFONYLPROPIONITRILE 有权
    制备3-甲基磺酰脲的方法

    公开(公告)号:US20150232421A1

    公开(公告)日:2015-08-20

    申请号:US14699934

    申请日:2015-04-29

    Abstract: The present invention relates to processes for preparing 3-methylsulfonylpropionitrile. The processes provide a good yield and a good purity of the final product and provide a controllable reaction. The present invention also relates to a crystalline form of 3-methylsulfonylpropionitrile having X-ray diffraction peaks at 13.9±0.1, 19.2±0.1, 20.0±0.1, 22.5±0.1, 23.2±0.1, 25.7±0.1, 28.1±0.1, 29.9±0.1, and 30.6±0.1 degrees 20, and wherein the most intense peak is the peak at 13.9±0.1 degrees 20.

    Abstract translation: 本发明涉及3-甲基磺酰基丙腈的制备方法。 该方法提供了最终产物的良好产率和良好的纯度并提供了可控的反应。 本发明还涉及在13.9±0.1,19.2±0.1,20.0±0.1,22.5±0.1,23.2±0.1,25.7±0.1,23.1±0.1,29.7±0.1,28.1±0.1,29.9±±的X射线衍射峰的3-甲基磺酰基丙腈的结晶形式 0.1和30.6±0.1度20,其中最强峰是13.9±0.1度20的峰。

    Process for purifying mesotrione
    10.
    发明授权
    Process for purifying mesotrione 有权
    净化甲基磺草酮的方法

    公开(公告)号:US07863482B2

    公开(公告)日:2011-01-04

    申请号:US10598993

    申请日:2005-03-03

    CPC classification number: C07C315/06 C07C317/24

    Abstract: A method for reducing the cyanide levels in a mesotrione sample, said method comprising: (i) taking an aqueous solution of the mesotrione sample in an aqueous solvent, (ii) adjusting the pH of said aqueous solution to a value of 9.5 or higher, and (iii) crystallising the mesotrione out of solution is disclosed.

    Abstract translation: 一种降低甲基磺草酮样品中氰化物含量的方法,所述方法包括:(i)将甲基磺草酮样品的水溶液置于含水溶剂中,(ii)将所述水溶液的pH调节至9.5或更高的值, 并且(iii)从溶液中析出甲磺草酮。

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