Process for the production of benzofurans
    2.
    发明授权
    Process for the production of benzofurans 有权
    苯并呋喃生产工艺

    公开(公告)号:US08674121B2

    公开(公告)日:2014-03-18

    申请号:US13321754

    申请日:2010-05-26

    CPC classification number: C07D307/80 C07C205/45

    Abstract: A process for the production of 2-alkyl-3-aroyl-5-nitrobenzofurans by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-aryl-ethanones and subsequent treatment of the esters with combinations of bases and proton acids or Lewis acids. This process can be used for the production of Dronedarone. Furthermore, novel intermediates for the manufacture of Dronedarone are provided.

    Abstract translation: 通过2-(2-羟基-5-硝基苯基)-1-芳基乙酰胺的酰化生产2-烷基-3-芳酰基-5-硝基苯并呋喃的方法,随后用碱和质子酸的组合处理酯 或路易斯酸。 该方法可用于生产决奈达隆。 此外,还提供了制备决奈达隆的新型中间体。

    PROCESS FOR THE PRODUCTION OF BENZOFURANS
    6.
    发明申请
    PROCESS FOR THE PRODUCTION OF BENZOFURANS 有权
    生产苯甲醚的方法

    公开(公告)号:US20120065411A1

    公开(公告)日:2012-03-15

    申请号:US13321754

    申请日:2010-05-26

    CPC classification number: C07D307/80 C07C205/45

    Abstract: A process for the production of 2-alkyl-3-aroyl-5-nitrobenzofurans by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-aryl-ethanones and subsequent treatment of the esters with combinations of bases and proton acids or Lewis acids. This process can be used for the production of Dronedarone. Furthermore, novel intermediates for the manufacture of Dronedarone are provided.

    Abstract translation: 通过2-(2-羟基-5-硝基苯基)-1-芳基乙酰胺的酰化生产2-烷基-3-芳酰基-5-硝基苯并呋喃的方法,随后用碱和质子酸的组合处理酯 或路易斯酸。 该方法可用于生产决奈达隆。 此外,还提供了制备决奈达隆的新型中间体。

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