反应详情

温度

45 °C

To a solution of 2-fluoro-3-(1,4-dioxaspiro[4.5]decan-8-yl)pyridine (7.88 g, 33.2 mmol) in acetone (350 mL) was added aqueous hydrochloric acid (39.9 mL, 39.9 mmol, 1N). The mixture was heated to 45° C. for 5 h, then cooled to room temperature. Most of the organic solvent was removed in vacuo and ethyl acetate (200 mL) was added. The resulting solution was washed with saturated aqueous sodium bicarbonate (2×), water (1×), saturated aqueous sodium chloride (1×), dried over anhydrous magnesium sulfate, filtered, and concentrated in vacuo to give 4-(2-fluoropyridin-3-yl)cyclohexanone. MS (ESI, pos. ion) m/z: 194.1 (M+1).

1. temperaturecooled to room temperature
2. customMost of the organic solvent was removed in vacuo and ethyl acetate (200 mL)
3. additionwas added
4. washThe resulting solution was washed with saturated aqueous sodium bicarbonate (2×), water (1×), saturated aqueous sodium chloride (1×)
5. dry with materialdried over anhydrous magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo