Acetic Acid → 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenylmethanamine

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Reaction Steps

In a 200 mL round bottomed flask equipped with a magnetic stir bar, benzyl 4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)benzylcarbamate (C14) (0.850 g, 1.82 mmol) was diluted with a solution of hydrogen bromide in acetic acid (33 wt %, 15.0 mL, 1.82 mmol). The suspension was allowed to stir for 1 hour. Diethyl ether (150 mL) was added, and the reaction mixture was stirred for an additional 30 minutes. The resulting precipitate was collected via filtration and treated with aqueous sodium hydroxide. The resulting suspension was extracted with ethyl acetate (3×75 mL). The combined organic layers were dried over anhydrous magnesium sulfate, filtered, and concentrated to afford the title compound as a white solid (0.448 g, 74%): 1H NMR (400 MHz, DMSO-d6) δ 9.39 (s, 1H), 8.07 (dd, J=10.6, 8.6 Hz, 4H), 7.69-7.56 (m, 2H), 7.48 (d, J=8.2 Hz, 2H), 3.79 (s, 2H); 19F NMR (376 MHz, DMSO-d6) δ −56.98; ESMIS m/z 318 ([M+H]+) (—NH2).

Provenance & Evidence