Process for producing thiophene compound and intermediate thereof
    2.
    发明授权
    Process for producing thiophene compound and intermediate thereof 有权
    制备噻吩化合物及其中间体的方法

    公开(公告)号:US08399685B2

    公开(公告)日:2013-03-19

    申请号:US12919394

    申请日:2009-02-27

    IPC分类号: C07D333/32

    摘要: To provide a novel process for producing a 2-aryl-3-hydroxy-4-substituted carbonyl thiophene compound or an intermediate thereof useful as an intermediate for production of medicines and agricultural chemicals.A 2-aryl acetate compound represented by the formula (1): wherein R1 is an aryl group or the like, R4 is a C1-3 alkyl group or the like, and X is a leaving group, is reacted with a thioacetic acid compound to form a thioacetyl compound (3), the thioacetyl compound (3) is reacted with a vinyl ketone compound to form a γ-ketosulfide compound (5), which is cyclized under basic conditions to form a dihydrothiophene compound (6), and the dihydrothiophene compound (6) is oxidized by using an oxidizing agent to produce a 2-aryl-3-hydroxy-4-substituted carbonyl thiophene compound (7).

    摘要翻译: 提供一种生产2-芳基-3-羟基-4-取代的羰基噻吩化合物或其中间体的新方法,其用作制备药物和农药的中间体。 由式(1)表示的2-芳基乙酸酯化合物:其中R 1为芳基等,R 4为C 1-3烷基等,X为离去基,与硫代乙酸化合物 为了形成硫代乙酰基化合物(3),硫代乙酰基化合物(3)与乙烯基酮化合物反应形成γ-酮硫醚化合物(5),其在碱性条件下环化形成二氢噻吩化合物(6),并且 二氢噻吩化合物(6)通过使用氧化剂氧化,得到2-芳基-3-羟基-4-取代的羰基噻吩化合物(7)。

    PROCESS FOR PRODUCING THIOPHENE COMPOUND AND INTERMEDIATE THEREOF
    3.
    发明申请
    PROCESS FOR PRODUCING THIOPHENE COMPOUND AND INTERMEDIATE THEREOF 有权
    生产噻吩化合物及其中间体的方法

    公开(公告)号:US20110124884A1

    公开(公告)日:2011-05-26

    申请号:US12919394

    申请日:2009-02-27

    IPC分类号: C07D333/32 C07C327/12

    摘要: To provide a novel process for producing a 2-aryl-3-hydroxy-4-substituted carbonyl thiophene compound or an intermediate thereof useful as an intermediate for production of medicines and agricultural chemicals.A 2-aryl acetate compound represented by the formula (1): wherein R1 is an aryl group or the like, R4 is a C1-3 alkyl group or the like, and X is a leaving group, is reacted with a thioacetic acid compound to form a thioacetyl compound (3), the thioacetyl compound (3) is reacted with a vinyl ketone compound to form a γ-ketosulfide compound (5), which is cyclized under basic conditions to form a dihydrothiophene compound (6), and the dihydrothiophene compound (6) is oxidized by using an oxidizing agent to produce a 2-aryl-3-hydroxy-4-substituted carbonyl thiophene compound (7).

    摘要翻译: 提供一种生产2-芳基-3-羟基-4-取代的羰基噻吩化合物或其中间体的新方法,其用作制备药物和农药的中间体。 由式(1)表示的2-芳基乙酸酯化合物:其中R 1为芳基等,R 4为C 1-3烷基等,X为离去基,与硫代乙酸化合物 为了形成硫代乙酰基化合物(3),硫代乙酰基化合物(3)与乙烯基酮化合物反应形成γ-酮硫醚化合物(5),其在碱性条件下环化形成二氢噻吩化合物(6),并且 二氢噻吩化合物(6)通过使用氧化剂氧化,得到2-芳基-3-羟基-4-取代的羰基噻吩化合物(7)。