反应详情

To a solution of tert-butyl 3-(3-(cycloheptylmethoxy)phenyl)-3-hydroxypropylcarbamate (0.550 g, 1.46 mmol) in dichloromethane (20 mL) was added Celite (est. 3-4 g) and pyridinium chlorochromate (0.377 g, 1.75 mmol). After stirring overnight at room temperature, the solids were removed by filtration and the filtrate was concentrated under reduced pressure. Purification by flash chromatography (5% EtOAc-hexanes) gave tert-butyl 3-(3-(cycloheptylmethoxy)phenyl)-3-oxopropylcarbamate as a clear oil. Yield (0.50 g, 91%): 1H NMR (400 MHz, DMSO-d6) δ 7.49 (d, J=7.6 Hz, 1H), 7.41 (d, J=8.0 Hz, 1H), 7.39 (dd, J=4.4, 2.2 Hz, 1H), 7.18 (dd, J=7.6, 2.4 Hz, 1H), 6.78 (t, J=5.6 Hz, 1H), 3.80 (d, J=6.4 Hz, 2H), 3.24 (dt, J=6.6, 6.0 Hz, 2H), 3.10 (t, J=6.8 Hz, 2H), 1.86-1.97 (m, 1H), 1.77-1.83 (m, 2H), 1.16-1.68 (m, 19H).*

1. customthe solids were removed by filtration
2. concentrationthe filtrate was concentrated under reduced pressure
3. customPurification by flash chromatography (5% EtOAc-hexanes)