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A suspension of N-(5-fluoro-2-nitro-4-trifluoromethyl-phenyl)-acetamide (17.8 g, 67.0 mmol) in aqueous HCl (3M, 400 mL) was heated at reflux for 3 h. The resulting suspension was cooled to 0° C. and brought to pH 8 with NaHCO3. The resulting solid was collected to yield the titled compound (13.7 g, 91% yield). The compound did not yield MS data. 1H NMR (400 MHz, CDCl3): 8.48 (d, J=7.3 Hz, 1H), 6.75-6.18 (m, 3H).

1. temperaturewas heated
2. temperatureat reflux for 3 h
3. customThe resulting solid was collected