1-(4-(Trifluoromethyl)phenyl)ethan-1-one → 1-[4-(Trifluoromethyl)phenyl]ethanone oxime

Participants

Reaction Steps

4-Trifluoromethylacetophenone (13.6 g, 72.3 mmol) and O-methylhydroxylamine hydrochloride were combined in pyridine (100 mL) and stirred at ambient temperature for 16 hours. The mixture was concentrated under reduced pressure and the residue was suspended in diethyl ether. The suspension was filtered and the filter cake was washed with diethyl ether. The filtrate was washed with water, 1N HCl, and water. The organic phase was concentrated to provide the title compound. 1H NMR (300 MHz, d6-DMSO) 7.90-7.68 (m, 4H), 3.97 and 3.78 (2S, 1H), 2.20 and 2.17 (2s, 3H); MS (DCI/NH3) m/e 218 (M+H)+.

Provenance & Evidence