Process for producing 6-phenoxypicolinic aldehydes
    8.
    发明授权
    Process for producing 6-phenoxypicolinic aldehydes 失效
    6-苯氧基吡啶醛的制备方法

    公开(公告)号:US4393213A

    公开(公告)日:1983-07-12

    申请号:US315228

    申请日:1981-10-26

    摘要: A process for producing 6-phenoxypicolinic aldehydes, which comprises reacting a 2-halogeno-6-phenoxypyridine represented by the general formula I: ##STR1## where X is a halogen atom, Y is independently an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms substituted by a halogen atom, an alkylthio group of 1 to 4 carbon atoms, a trifluoromethyl group, a fluorine atom or a chlorine atom, Z is a hydrogen atom or a fluorine atom, and n is an integer of 0 to 2, with magnesium metal, and then with a formylating reagent. These compounds are used as intermediates for the synthesis of insecticides.

    摘要翻译: 一种生产6-苯氧基吡啶甲醛的方法,其包括使通式I表示的2-卤代-6-苯氧基吡啶与其中X为卤素原子的Y反应,Y独立地为1至4个碳原子的烷基 ,1〜4个碳原子的烷氧基,1〜4个碳原子被卤素原子取代的烷氧基,1〜4个碳原子的烷硫基,三氟甲基,氟原子或氯原子,Z为 氢原子或氟原子,n为0〜2的整数,与金属镁反应,然后与甲酰化试剂反应。 这些化合物用作合成杀虫剂的中间体。

    Phenoxypyridine derivatives
    9.
    发明授权
    Phenoxypyridine derivatives 失效
    苯氧基吡啶衍生物

    公开(公告)号:US4251662A

    公开(公告)日:1981-02-17

    申请号:US107937

    申请日:1979-12-28

    CPC分类号: C07D213/647 C07D213/89

    摘要: A phenoxypyridine derivative having the formula(CH.sub.3 COO).sub.n CH.sub.3-n R (I)wherein R represents ##STR1## and n is 1 or 2 is produced by reacting a phenoxypyridine-N-oxide derivative having the formula(CH.sub.3 COO).sub.n-1 CH.sub.4-n R' (III)wherein R' represents ##STR2## and n is 1 or 2 with acetic anhydride. The phenoxypyridine derivatives are especially suitable for producing synthetic pyrethroids having excellent insecticidal and acaricidal activity in high yield and an economical process.

    摘要翻译: 具有式(CH 3 COO)n CH 3-n R(I)的苯氧基吡啶衍生物,其中R表示< IMAGE>>>和n为1或2是通过使具有式(CH 3 COO)n的苯氧基吡啶-N-氧化物衍生物 -1CH4-nR'(III)其中R'表示< IMAGE> + TR< IMAGE>和n是1或2与乙酸酐。 苯氧基吡啶衍生物特别适用于以高产率和经济的方法生产具有优良杀虫和杀螨活性的合成拟除虫菊酯。