4-(Trifluoromethyl)-2,3,5,6-tetrafluorobenzyl bromide → 2-Ethanoyloxy-5-(2,3,5,6-tetrafluoro-4-trifluoromethylbenzylamino)benzoic acid

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According to the similar procedure in Synthesis Example 1, by using 2-ethanoyloxy-5-aminobenzoic acid (0.81 g, 4.10 mmole) which was prepared from Synthesis Example (14-3), DMF (15 ml), TEA (0.1 ml), tetrabutyl ammonium iodide (5 mg), and 2,3,5,6-tetrafluoro-4-trifluoromethylbenzyl bromide (1.02 ml, 6.15 mmole), 0.92 g (53.0% yield) of was obtained 2-ethanoyloxy-5-(2,3,5,6-tetrafluoro-4-trifluoromethylbenzylamino)benzoic acid as a white solid.:

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