Process for preparing isatins with control of side-product formation
    3.
    发明申请
    Process for preparing isatins with control of side-product formation 审中-公开
    用于制备具有副产物形成控制的异硬脂酸酯的方法

    公开(公告)号:US20060247442A1

    公开(公告)日:2006-11-02

    申请号:US11413160

    申请日:2006-04-27

    CPC分类号: C07D209/38 C07D403/04

    摘要: Methods and kits for preventing or minimizing the formation of isatin oximes during formation of an isatin from an isonitrosoacetanilide are provided. Also provided are methods and kits for preventing or minimizing the formation of isatin oxime impurities after formation of an isatin from an isonitrosoacetanilide by using a decoy agent in the quenching and/or extraction steps. The isatins can be prepared using a decoy agent and desirably a strong acid. Further provided are methods for preparing isatin oximes.

    摘要翻译: 提供了用于防止或最小化来自异硝基乙酰替苯胺的靛红形成期间靛红肟形成的方法和试剂盒。 还提供了用于在骤冷和/或萃取步骤中通过使用诱饵剂从异亚氨基乙酰替苯胺形成靛红后,防止或最小化靛红肟杂质形成的方法和试剂盒。 异丁锭可以使用诱饵剂和期望的强酸来制备。 还提供了制备靛红肟的方法。

    Preparation and purification of 4-(indazol-3-yl)phenols
    9.
    发明授权
    Preparation and purification of 4-(indazol-3-yl)phenols 失效
    制备和纯化4-(吲唑-3-基)苯酚

    公开(公告)号:US07601847B2

    公开(公告)日:2009-10-13

    申请号:US11257344

    申请日:2005-10-24

    IPC分类号: C07D231/56

    CPC分类号: C07D231/56

    摘要: The present invention concerns processes for the production and purification of compounds of the formula: where R1-R10 are as defined in the specification. Preferred processes of the invention utilize a lithium bis(trimethylsilyl)amide, lithium dicyclohexylamide, or potassium bis(trimethylsilyl)amide base and a R1—X alkylating agent where X is as described in the specification. An alcohol preferably is added to the product solution is used to promote crystallization of the desired product.

    摘要翻译: 本发明涉及生产和纯化下式化合物的方法:其中R1-R10如说明书中所定义。 本发明的优选方法使用双(三甲基甲硅烷基)氨基锂,二环己基氨基锂或二(三甲基甲硅烷基)氨基钾酰胺碱和R1为-X-烷基化剂,其中X如说明书中所述。 将优选加入到产物溶液中的醇用于促进所需产物的结晶。