反应详情

To a solution of 1-(((3,3-ethylenedioxy-1-phenylcyclohexyl)methoxy)methyl)-3,5-bis(trifluoromethyl)benzene (990 mg, 2.09 mmol) in acetone (4 mL) at room temperature were added 1N HCl solution (3.13 mL) and the resulting mixture was stirred at reflux for 2 hr. After cooling down, saturated sodium bicarbonate and dichloromethane were added and the organic layer was separated. The aqueous layer was extracted with dichloromethane 2 times and the combined organic layers were dried over magnesium sulfate, filtered and concentrated under vacuum to give the title compound as clear pale yellow sticky oil (830 mg, 92% yield). 1H NMR (400 MHz, CDCl3) δ 1.60 (1H, m), 1.88 (1H, m), 2.19–2.24 (2H, m), 2.29–2.32 (2H, m), 2.85 (2H, dd, J=12, 68 Hz), 3.51 (2H, dd, J=12, 56 Hz), 4.52 (2H, dd, J=16, 18 Hz), 7.22–7.25 (1H, m), 7.32 (4H, d, J=4 Hz), 7.63 (2H, s), 7.77 (1H, s). HPLC purity (retention time): 90% (2.32 min, method C). MS: 453.37 (M+Na+).

1. temperatureat reflux for 2 hr
2. temperatureAfter cooling down
3. customthe organic layer was separated
4. extractionThe aqueous layer was extracted with dichloromethane 2 times
5. dry with materialthe combined organic layers were dried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated under vacuum