3-acetoxyacetamido-5-fluoro-2-hydroxy-benzoic acid-(2,2,2,-trifluoro-ethyl)amide 在
silica gel 、 Ethylacetate acetone 作用下,
以
sodium hydroxide 为溶剂,
反应 0.5h,
以3.3 g=62.7% of the theoretical yield的产率得到5-Fluoro-3-hydroxyacetamido-2-hydroxy-benzoic acid-(2,2,2,-trifluoro-ethyl)amide