Preparation of 3,4,6-trifluorophthalic acid

Details Preparation of 3,4,6-trifluorophthalic acid Preparation of 3,4,6-trifluorophthalic acid

C - Chemistry, Metallurgy

07

C

C07C 51/06 (2006.01) C07C 51/00 (2006.01) C07C 63/68 (2006.01) C07D 209/48 (2006.01)

Patent

CA 2079464

2079464 9116308 PCTABS00007 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· to 270 ·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.

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