Benzo[b]thiophene derivatives and process for preparing the same
    1.
    发明授权
    Benzo[b]thiophene derivatives and process for preparing the same 失效
    苯并[b]噻吩衍生物及其制备方法

    公开(公告)号:US06884896B2

    公开(公告)日:2005-04-26

    申请号:US10258173

    申请日:2002-02-22

    摘要: The present invention is 3,4-disubstituted-benzo[b]thiophene derivatives represented by general formula (I) and processes for preparing compounds represented by general formula (V) from compounds represented by general formula (IV), preparing a mixture of compounds represented by the following formula (II) and the following formula (III) and preparing the benzo[b]thiophene derivatives represented by the above formula (I): wherein, R1 and R2 represent each a halogen atom, a trihalomethyl group, a C1-4 alkyl group or a C1-4 alkoxy group; X represents a hydroxy group or a halogen atom; R3 and R4 represent each a hydrogen or a halogen atom, a trihalomethyl group, a C1-4 alkyl group or a C1-4 alkoxy group; and R5 represents a C1-3 alkyl group or a trifluoromethyl group.

    摘要翻译: 本发明是由通式(I)表示的3,4-二取代 - 苯并[b]噻吩衍生物和由通式(Ⅳ)表示的化合物制备由通式(Ⅴ)表示的化合物的方法,制备化合物 由下式(II)和下式(III)表示并制备由上式(I)表示的苯并[b]噻吩衍生物:其中R 1和R 2 代表卤素原子,三卤代甲基,C 1-4烷基或C 1-4烷氧基; X表示羟基或卤素原子; R 3和R 4各自表示氢或卤素原子,三卤代甲基,C 1-4烷基或C 1-4烷基, C 1-4烷氧基; R 5表示C 1-3烷基或三氟甲基。