反应详情

To a round bottom flask containing benzyl((2R,3S)-3-(tert-butoxy)-1-hydroxybutan-2-yl)carbamate (5.27 g, 17.8 mmol) was added MeOH (100 mL). Solution was degassed with nitrogen for 15 min at which time palladium on carbon (0.95 g, 0.89 mmol) in MeOH (5 mL) was added. A hydrogen atmosphere was then inserted. Resulting reaction mixture allowed to stir 40 min at room temperature at atmospheric pressure when water (2 mL) was added and once again a hydrogen atmosphere was inserted at atmospheric pressure and the subsequent reaction mixture allowed to stir 18 hr at room temperature. The reaction mixture was filtered through a pad of celite and concentrated to a brown oil. Oil redissolved in toluene and concentrated to afford (2R,3S)-2-amino-3-(tert-butoxy)butan-1-ol (2.5 g, 15.5 mmol, 87% yield) as a brown oil. LCMS m/z 162.1 (M+H)+, Rt 0.41 min (Mass ion only, no UV peak).

1. additionwas added
2. customResulting
3. customreaction mixture
4. additionwas added
5. filtrationThe reaction mixture was filtered through a pad of celite
6. concentrationconcentrated to a brown oil
7. dissolutionOil redissolved in toluene
8. concentrationconcentrated