Hydrogen Peroxide → 2-(2-Fluorophenyl)isobutyramide

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2-(2-Fluorophenyl)-2-methylpropionitrile (0.211 g) was magnetically stirred with aqueous solutions of 5N sodium hydroxide (2 mL), 55% tetrabutylammonium hydrogensulfate (0.1 mL) and 30% hydrogen peroxide (3 mL) for 22 hours. The reaction mixture was diluted with toluene and extracted. The aqueous phase was neutralized with 5% hydrochloric acid and extracted twice with ethyl acetate. The combined organic extracts were washed with water, then brine, and dried over anhydrous magnesium sulfate. Filtration and evaporation gave 2-(2-fluorophenyl)isobutyramide as a pale-green oil that solidified on standing (0.173 g). GC/MS: m/z 181 (RT 9.80 min.). 1H-NMR (DMSO-d6): 7.39-7.27 (m, 2H), 7.19-7.07 (m, 2H), 6.83 and 6.78 (2 s, CONH2), 1.43 (s, 6H)

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