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7 条记录 (耗时 0.016 秒)

    Process for preparing 1-hydroxyalkyl-2-methyl-5-nitroimidazoles
    3.
    发明授权
    Process for preparing 1-hydroxyalkyl-2-methyl-5-nitroimidazoles 失效
    1-羟基烷基-2-甲基-5-硝基咪唑的制备方法

    公开(公告)号：US4925951A

    公开(公告)日：1990-05-15

    申请号：US296708

    申请日：1989-01-13

    申请人： Viviane Massonneau ,  Michel Mulhauser ,  Albert Buforn

    发明人： Viviane Massonneau ,  Michel Mulhauser ,  Albert Buforn

    IPC分类号： C07D233/94 ,  C07D233/95 ,  C07D405/04 ,  C07D405/06

    CPC分类号： C07D405/04 ,  C07D233/94

    摘要： Process for preparing 1-(hydroxyalkyl)nitroimidazoles of formula: ##STR1## which comprises reacting a sulphite or diacetate of an alkylenediol of formula:HO-(CH.sub.2).sub.n -OH (II)in the presence of a strong acid (sulphuric acid) with an imidazole derivative of formula: ##STR2## followed by hydrolizing or alcoholizing the product obtained. In the formulae (I) and (III), R denotes hydrogen or hydrocarbon. In the formulae (I) and (II), n is 2 or 3. In the formula (III), X denotes hydrogen or a radical which can be removed by hydrolysis or alcoholysis.

    摘要翻译： 制备式（I）的1-（羟基烷基）硝基咪唑的方法：其包括在强酸存在下使式HO-（CH 2）n -OH（II）的亚烷基二醇的亚硫酸盐或二乙酸酯反应 硫酸）与式（III）的咪唑衍生物反应，然后使所得产物水解或醇化。 在式（I）和（III）中，R表示氢或烃。 在式（I）和（II）中，n为2或3.在式（III）中，X表示氢或可以通过水解或醇解除去的基团。

    Processes for the preparation of pesticidal compounds and novel intermediates thereof
    6.
    发明授权
    Processes for the preparation of pesticidal compounds and novel intermediates thereof 有权
    杀虫化合物的制备方法及其新型中间体

    公开(公告)号：US06812347B2

    公开(公告)日：2004-11-02

    申请号：US10297675

    申请日：2003-04-30

    申请人： Jean-François Rousseau ,  Albert Buforn

    发明人： Jean-François Rousseau ,  Albert Buforn

    IPC分类号： C07D40104

    CPC分类号： C07D231/44

    摘要： A process for the preparation of a compound of the formula (I): wherein R1 is CN or CSNH2; X is N or CR4; R2 and R4 are each independently hydrogen or chloro; R3 is halo, haloalkyl, haloalkoxy or —SF5; R5 and R6 are each independently alkyl and n is 0, 1 or 2; said process comprising reacting a compound of the formula (II): wherein the symbols are as defined above and W is H, with an alkylating agent of the formula (III): R6—Y  (III) wherein R6 is as defined above and Y is a leaving group. The process may also be conducted by reacting a compound of formula (II) initially with an inorganic salt or an organic base, and reacting the resultant salt of the compound of formula (II) with the alkylating agent.