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公开(公告)号:US07208641B2
公开(公告)日:2007-04-24
申请号:US10489362
申请日:2002-09-13
IPC分类号: C07C31/24
CPC分类号: C07C29/124 , C07C31/38
摘要: 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 6 wt % of 4,4′-oxybis(butyric acid).
摘要翻译: 提供了一种制备2,2,2-三氟乙醇的方法,其中使γ-羟基丁酸盐与1,1,1-三氟-2-氯乙烷反应产生2,2,2-三氟乙醇。 该方法导致2,2,2-三氟乙醇的收率提高,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, 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)。