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78 条记录 (耗时 0.024 秒)

    Mercapto-substituted pyridine compounds
    34.
    发明授权
    Mercapto-substituted pyridine compounds 失效
    巯基取代的吡啶化合物

    公开(公告)号：US5168113A

    公开(公告)日：1992-12-01

    申请号：US471337

    申请日：1990-01-29

    申请人： Takahiro Haga ,  Yasuhiro Tsujii ,  Tatsuo Isogai ,  Shigeo Murai ,  Hisayoshi Jonishi ,  Tokiya Kimura ,  Hiroshi Sasaki ,  Takao Awazu ,  Toshihiro Tanaka

    发明人： Takahiro Haga ,  Yasuhiro Tsujii ,  Tatsuo Isogai ,  Shigeo Murai ,  Hisayoshi Jonishi ,  Tokiya Kimura ,  Hiroshi Sasaki ,  Takao Awazu ,  Toshihiro Tanaka

    IPC分类号： A01N43/40 ,  C07D213/82 ,  C07D213/89 ,  C07D401/12

    CPC分类号： C07D213/82 ,  A01N43/40 ,  C07D213/89 ,  C07D401/12

    摘要： A mercapto-substituted pyridine compound having formula (I): ##STR1## where R.sub.1 and R.sub.2 are alkyl groups, and n is 0 or 1, and salts thereof and a process for preparing the same are disclosed. The mercapto-substituted pyridine compound is useful as an intermediate for preparing a herbicidal compound.The present invention further provides aminocarbonyl-substituted pyridinesulfinic acid (ACPS) or salts thereof as the precursor of aminosulfonyl-substituted pyridinecarbonic acid amide compound (APCA) which is useful as the starting material for agricultural chemicals, medicine, etc. Moreover, the preparation process of the present invention is an industrially advantageous preparation process which is capable of preparing in a series of steps from mercapto-substituted pyridinecarboxylic acid amide compound (MPCA) or aminocarbonyl-substituted halogenopyridine compound (ACHP) to ACPS or salts thereof, and further to APCA.

    摘要翻译： 公开了具有式（I）的巯基取代的吡啶化合物：其中R 1和R 2是烷基，n是0或1，及其盐及其制备方法。 巯基取代的吡啶化合物可用作制备除草化合物的中间体。 本发明还提供氨基羰基取代的吡啶亚磺酸（ACPS）或其盐作为氨基磺酰基取代的吡啶碳酰胺化合物（APCA）的前体，其可用作农药，药物等的原料。此外，制备方法 本发明是一种工业上有利的制备方法，其能够从巯基取代的吡啶羧酸酰胺化合物（MPCA）或氨基羰基取代的卤代吡啶化合物（ACHP）到ACPS或其盐，以及APCA 。

    Process for producing 2-amino-4,6-dichloropyrimidine
    38.
    发明授权
    Process for producing 2-amino-4,6-dichloropyrimidine 失效
    2-氨基-4,6-二氯嘧啶的制备方法

    公开(公告)号：US4929729A

    公开(公告)日：1990-05-29

    申请号：US304031

    申请日：1989-01-31

    申请人： Takahiro Haga ,  Yasuhiro Tsujii ,  Tatsuo Isogai ,  Shigeo Murai ,  Toshihiro Tanaka

    发明人： Takahiro Haga ,  Yasuhiro Tsujii ,  Tatsuo Isogai ,  Shigeo Murai ,  Toshihiro Tanaka

    IPC分类号： C07D239/42

    CPC分类号： C07D239/42

    摘要： The present invention relates to an industrially advantageous process for producing 2-amino-4,6-dichloropyrimidine, which comprises reacting 2-amino-4,6-dihydroxypyrimidine or its salt with phosphorus oxychloride at a temperature of from 50.degree. to 100.degree. C. in the presence of a solvent and an acid removing agent. Further, the yield of 2-amino-4,6-dichloropyrimidine can be improved by hydrolyzing 4,6-dichloro-2-pyrimidinylphosphoramidic dichloride produced as a by-product of the chlorination reaction to form 2-amino-4,6-dichloropyrimidine. The 2-amino-4,6-dichloropyrimidine produced by the process of the present invention is useful as an intermediate for medicines and agricultural chemicals.