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    Oxazolidinedione compounds, the process for preparing the same and herbicidal composition containing the same
    2.
    发明公开
    Oxazolidinedione compounds, the process for preparing the same and herbicidal composition containing the same 失效
    恶唑烷二酮化合物，它们的制备方法和含有它们的除草组合物。

    公开(公告)号：EP0382884A1

    公开(公告)日：1990-08-22

    申请号：EP89112841.5

    申请日：1989-07-13

    申请人： SAGAMI CHEMICAL RESEARCH CENTER ,  CHISSO CORPORATION ,  Kaken Pharmaceutical Co., Ltd.

    发明人： Hirai, Kenji ,  Fujita, Atsuko ,  Sato, Hiroshi ,  Hirose, Hiroaki ,  Yokota, Masahiro ,  Nagato, Shoin

    IPC分类号： C07D263/44 ,  A01N43/76

    CPC分类号： C07D263/44 ,  A01N43/76

    摘要： An oxazolidinedione compound represented by the formula (I):
    wherein R 1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group having 3 to 5 carbon atoms, an alkenyl group having 3 to 5 carbon atoms, an alkynyl group having 3 to 5 carbon atoms or an alkoxycarbonyl group having 1 or 2 carbon atoms in the alkyl moiety thereof, R 2 represents an alkyl group having 3 to 5 carbon atoms or a cycloalkyl group having 3 to 5 carbon atoms, and X represents a chlorine atom or a fluorine atom; a process for preparing the same; and a herbicidal composition comprising the oxazolidinedione compound as an active component are disclosed. The above oxazolidinedione compounds exhibit a high selectivity for useful crop plants and a strong herbicidal activity with respect to various noxious weeds.

    摘要翻译： 由式（I）表示的恶唑烷二酮化合物： worin - [R <1> darstellt氢原子的烷基具有1至5个碳原子，具有3-5个碳原子具有3至链烯基的环烷基组 碳原子数1-5的具有具有1或2个碳原子在烷基部分含3-5个碳原子或在烷氧基羰基炔基，R <2> darstellt具有3至5个碳原子或具有3至的环烷基烷基的 5个碳原子，X代表氯原子或氟原子; 用于制备它们的方法; 和一种除草组合物的恶唑烷二酮化合物，其活性成分是游离缺失盘。 上述恶唑烷二酮化合物表现出有用的作物植物，并且相对于各种有害杂草一个很强的除草活性的高选择性。

    Process for preparing 2-chloro-4-fluorophenol
    4.
    发明公开
    Process for preparing 2-chloro-4-fluorophenol 失效
    Verfahren zur Herstellung von 2-Chlor-4-Fluorphenol。

    公开(公告)号：EP0417720A2

    公开(公告)日：1991-03-20

    申请号：EP90117460.7

    申请日：1990-09-11

    申请人： SAGAMI CHEMICAL RESEARCH CENTER

    发明人： Hirai, Kenji ,  Yamashita, Mitsuo

    IPC分类号： C07C37/62 ,  C07C39/27

    CPC分类号： C07C37/62 ,  C07C39/27

    摘要： A process is disclosed for preparing 2-chloro-4-­fluorophenol which comprises chlorinating 4-fluorophenol with a chlorinating agent in the presence of water. The process according to the present invention has advantages in that the chlorination can be carried out using inexpensive reagents without requiring the use of particular apparatus and under mild conditions, and the desired product can be obtained in good yields and with high selectivity. 2-­Chloro-4-fluorophenol obtained in the present invention is useful as a starting material for producing various pharma­ceutical agents and agricultural agents.

    摘要翻译： 公开了一种制备2-氯-4-氟苯酚的方法，该方法包括在水存在下用氯化剂氯化4-氟苯酚。 根据本发明的方法具有以下优点：氯化可以使用便宜的试剂进行，而不需要使用特定的装置并且在温和条件下，可以以良好的产率和高选择性获得所需的产物。 本发明中得到的2-氯-4-氟苯酚可用作生产各种药剂和农药的起始原料。