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公开(公告)号:US4782180A
公开(公告)日:1988-11-01
申请号:US860728
申请日:1986-05-07
IPC分类号: C07C51/08 , C07C51/09 , C07C51/38 , C07D215/56 , C07D401/06
CPC分类号: C07D215/56 , C07C51/04 , C07C51/08 , C07C51/09 , C07C51/38 , C07C51/56 , C07D401/06
摘要: An improved process for the preparation of 2,3,4,5-tetrafluorobenzoic acid is described which involves decarboxylation of tetrafluorophthalic acid in the presence of a base catalyst. Also described is an improved method for preparing tetrafluorophthalic acid and, in turn, a one-pot process for tetrafluorobenzoic acid using the combination of the two improvements.
摘要翻译: 描述了一种用于制备2,3,4,5-四氟苯甲酸的改进方法,其涉及在碱催化剂存在下脱氟四氟邻苯二甲酸。 还描述了使用两种改进的组合制备四氟邻苯二甲酸的改进方法,以及四氟苯甲酸的一锅法。