反应详情

温度

20 °C

Ammonium formate (10 g, 0.15 mol) was added to a solution of 5-hydroxyadamantan-2-one (4.5 g, 0.027 mol, prepared as described in Tetrahedron 1968, 24, 5369) in MeOH (50 ml). Then 10% Pd—C (500 mg) was added carefully and the solution heated under reflux for 1 h. It was then filtered through celite and to this filtrate at 0° C. was added triethylamine (11.2 ml, 0.081 mol) and Boc anhydride (7.06 g, 0.0324 mol). The solution was stirred for 4 h at 20° C. and then concentrated under reduced pressure. The residue was diluted with water and extracted with EtOAc. The organic layer was dried and concentrated to give (5-hydroxyadamantan-2-yl)carbamic acid tert-butyl ester (7 g, 96%). LC-MS (m/z): 168 (M+1). 1HNMR (300 MHz, DMSO-d6): δ 6.8 (d, 1H), 6.7 (brs, 1H), 3.45 (d, 1H), 2.0 (s, 1H), 1.75-1.95 (m, 4H), 1.5-1.7 (m, 6H), 1.35 (s, 9H), 1.25 (t, 2H).

1. temperaturethe solution heated
2. temperatureunder reflux for 1 h
3. filtrationIt was then filtered through celite and to this filtrate at 0° C.
4. concentrationconcentrated under reduced pressure
5. additionThe residue was diluted with water
6. extractionextracted with EtOAc
7. customThe organic layer was dried
8. concentrationconcentrated