Reduction of trichloromethylpyridines to dichloromethylpyridines
    21.
    发明授权
    Reduction of trichloromethylpyridines to dichloromethylpyridines 失效
    将三氯甲基吡啶还原成二氯甲基吡啶

    公开(公告)号:US4499277A

    公开(公告)日:1985-02-12

    申请号:US475020

    申请日:1983-03-14

    IPC分类号: C07D213/61 C07D213/26

    CPC分类号: C07D213/61

    摘要: 2(6)-(Trichloromethyl)pyridines are reduced to the corresponding 2(6)-(dichloromethyl)pyridines by treatment with a strong base and an anionic reductant derived from a reductant source material selected from the group consisting of dialkylphosphite and trialkylphosphite said treatment taking place in the presence of a polar, non-hydroxylic solvent and/or a phase transfer catalyst.

    摘要翻译: 2(6) - (三氯甲基)吡啶通过用强碱和衍生自选自亚烷基亚磷酸二烷基酯和亚磷酸三烷基酯的还原剂来源的阴离子还原剂处理而还原成相应的2(6) - (二氯甲基)吡啶 在极性非羟基溶剂和/或相转移催化剂存在下进行。

    Reduction of trichloromethylpyridines to dichloromethylpyridines
    22.
    发明授权
    Reduction of trichloromethylpyridines to dichloromethylpyridines 失效
    将三氯甲基吡啶还原成二氯甲基吡啶

    公开(公告)号:US4499276A

    公开(公告)日:1985-02-12

    申请号:US475017

    申请日:1983-03-14

    IPC分类号: C07D213/61 C07D213/26

    CPC分类号: C07D213/61

    摘要: 2(6)-(Trichloromethyl)pyridines are reduced to the corresponding 2(6)-(dichloromethyl)pyridines by treatment with a strong base and an anionic reductant derived from a reductant source material selected from the group consisting of chloroform, dimethylsulfoxide, dimethylsulfone, and a ketone having a base-abstractable hydrogen, said treatment taking place in the presence of a polar, non-hydroxylic solvent and/or a phase transfer catalyst.

    摘要翻译: 通过用强碱和衍生自还原剂来源的阴离子还原剂处理将2(6) - (三氯甲基)吡啶还原成相应的2(6) - (二氯甲基)吡啶,该还原剂源选自氯仿,二甲基亚砜,二甲基砜 和具有碱取代氢的酮,所述处理在极性非羟基溶剂和/或相转移催化剂存在下进行。