Single pot process for making a fluoroanthranilic acid
    1.
    发明公开
    Single pot process for making a fluoroanthranilic acid 失效
    Eintopfverfahren zur Herstellung vonFluoroanthranilsäure。

    公开(公告)号:EP0417445A1

    公开(公告)日:1991-03-20

    申请号:EP90114450.1

    申请日:1990-07-27

    摘要: Disclosed is a method of making ionized fluoroanthranilic acid from a fluorophthalic compound in a single pot process without isolating any intermediate product. A composition is prepared which which comprises an aqueous solution of water, a fluorophthalic compound selected from the group consisting of
    and mixtures thereof, where "n" is 1 to 4, at a concentration of about 5 to about 30 percent by weight based on the water weight, and about 1 to about 1.5 equivalents of hydroxylamine or a mineral acid salt thereof. The pH of the composition is maintained at at least about 11 and the temperature of the composition is maintained at at least about 90°C. The unionized form of the acid is made by cooling below 50°C and lowering the pH to between about 4 and about 5. Also disclosed are the intermediate compounds, fluoro-N-hydroxyphthalimides, and a method of making them.

    摘要翻译: 公开了一种在单罐方法中从氟代邻苯二甲酸化合物制备离子化的邻氨苯甲酸的方法,而不分离任何中间产物。 制备组合物,其包含水的水溶液,选自下列的氟代邻苯二甲酸化合物及其混合物,其中“n”为1至4,浓度为约5至约30重量% 基于水重量,以及约1至约1.5当量的羟胺或其无机酸盐。 将组合物的pH保持在至少约11℃,并将组合物的温度保持在至少约90℃。通过在50℃以下冷却并将pH降低至约4℃来制备酸的结合形式 还公开了中间体化合物,氟-N-羟基邻苯二甲酰亚胺及其制备方法。

    Method for preparing 2-chlorobenzylamine
    2.
    发明公开
    Method for preparing 2-chlorobenzylamine 失效
    制备2-氯苯胺的方法

    公开(公告)号:EP0367232A3

    公开(公告)日:1990-11-07

    申请号:EP89120204.6

    申请日:1989-10-31

    IPC分类号: C07C211/27 C07C209/62

    CPC分类号: C07C209/62

    摘要: 2-Chlorobenzylamine is prepared from 2-chlorobenzylchloride in a two-step process. In the first step, 2-chlorobenzylchloride is reacted with alkali metal phthalimide, preferably formed in situ from potassium carbonate and phthalimide, to form the novel intermediate 2-chlorobenzylphthalimide. In the second step, the phthalimide ring of the 2-chlorobenzylphthalimide is cleaved to form 2-chlorobenzylamine.