反应详情

To a solution of 3-chloro-4-fluoro benzonitrile (1.0 g, 6.42 mmol) in ethanol (20 mL), was added hydroxylamine hydrochloride (0.665 g, 9.64 mmol), followed by addition of potassium carbonate (2.66 g, 19.28 mmol). The reaction mass was refluxed for 10-12 h. Excess of solvent was removed under vacuum and the reaction mass was diluted with water, acidified with dilute HCl and filtered to afford 0.400 g the desired product. 1HNMR (DMSO-d6): δ 5.95 (s, 2H), 7.42 (t, J=8.7 Hz, 1H), 7.69 (m, 1H), 7.83 (dd, 1H), 9.80 (s, 1H); MS [M+H]+: 189.12.

1. temperatureThe reaction mass was refluxed for 10-12 h
2. customExcess of solvent was removed under vacuum
3. additionthe reaction mass was diluted with water
4. filtrationfiltered