PROCESS FOR PREPARATION OF 2,2,2-TRIFLUOROETHANOL
    1.
    发明公开
    PROCESS FOR PREPARATION OF 2,2,2-TRIFLUOROETHANOL 有权
    VERFAHREN ZUR HERSTELLUNG VON 2,2,2-TRIFLUORETHANOL

    公开(公告)号:EP1426351A1

    公开(公告)日:2004-06-09

    申请号:EP02760828.0

    申请日:2002-09-13

    CPC classification number: C07C29/124 C07C31/38

    Abstract: A method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane to generate 2,2,2-trifluoroethanol is provided. This method leads to increased yields of 2,2,2-trifluoroethanol, facilitates the separation of salt byproducts and allows the recycling of an aprotic polar solvent.
    The present invention concerns a method for producing 2,2,2-trifluoroethanol in which a γ-hydroxybutyric acid salt is reacted with 1,1,1-trifluoro-2-chloroethane in an aprotic polar solvent to generate 2,2,2-trifluoroethanol. This method is characterized in that the γ-hydroxybutyric acid salt used contains no more than 6wt% of 4,4'-oxybis(butyric acid).

    Abstract translation: 提供一种制备2,2,2-三氟乙醇的方法,其中将γ-羟基丁酸盐与1,1,1-三氟-2-氯乙烷反应生成2,2,2-三氟乙醇。 该方法导致2,2,2-三氟乙醇的产率增加,促进了盐副产物的分离并允许非质子极性溶剂的再循环。 本发明涉及一种制备2,2,2-三氟乙醇的方法,其中γ-羟基丁酸盐在非质子极性溶剂中与1,1,1-三氟-2-氯乙烷反应生成2, 2,2-三氟乙醇。 该方法的特征在于所用的γ-羟基丁酸盐含有不超过6重量%的4,4'-氧双(丁酸)。

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