Process for the production of benzofurans
    25.
    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

    IPC分类号: C07D307/80

    CPC分类号: C07D307/80 C07C205/45

    摘要: 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.

    摘要翻译: 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 dronedarone intermediates
    26.
    发明授权
    Process for the production of dronedarone intermediates 有权
    生产决奈达隆中间体的方法

    公开(公告)号:US08658808B2

    公开(公告)日:2014-02-25

    申请号:US13322094

    申请日:2010-05-26

    IPC分类号: C07D307/80

    CPC分类号: C07D307/80

    摘要: A process for the production of Dronedarone intermediates of the formula (I), by acylation of 2-(2-hydroxy-5-nitrophenyl)-1-(4-methoxyphenyl)-ethanone, subsequent treatment of the ester with bases and a zeolite (alumosilicate) catalyst and optional subsequent demethylation. This process can be used for the production of Dronedarone.

    摘要翻译: 通过2-(2-羟基-5-硝基苯基)-1-(4-甲氧基苯基) - 乙酮的酰化生产式(I)的决奈达隆中间体的方法,随后用碱和沸石处理酯 (铝硅酸盐)催化剂和随后的脱甲基化。 该方法可用于生产决奈达隆。