申请人:Occidental Chemical Corporation
公开号:US05596104A1
公开(公告)日:1997-01-21
3,4,6-trifluorophthalic acid is prepared in high yield by reaction of a 3,4,6-trichloro-N-substituted phthalimide with potassium fluoride at temperatures in the range of 200.degree. to 270.degree. C. in the absence of a catalyst to form the corresponding trifluoro-N-substituted phthalimide which, in turn, is hydrolyzed to form the 3,4,6-trifluorophthalic acid.
3,4,6-三氟邻苯二甲酸可以通过在200度到270度范围内,将3,4,6-三氯-N-取代邻苯二甲酰亚胺与氟化钾反应,不使用催化剂,制备出高收率的产物。反应生成相应的三氟-N-取代邻苯二甲酰亚胺,随后水解生成3,4,6-三氟邻苯二甲酸。