反应详情

A mixture of (2S)-1-amino-3-(4-benzyloxy-phenoxy)-propan-2-ol (0.9 g, 3.3 mmol) (which was obtained in Example 4), 0.2 mL of acetic acid and 10% palladium on carbon (Pd/C) (0.3 g) in 70 mL of ethanol was pressurized with 20 psi hydrogen and shaken over 2 hours. The catalyst was then removed by filtering through a short pad of silica gel and the solvent was removed to give the title compound as an off-white solid; 1H NMR (300 MHz, DMSO-6) δ 1.86 (s, 1H), 2.66 (dd, J=12.8, 5.3 Hz, 1H), 2.85 (dd, J=12.8, 3.5 Hz, 1H), 3.79-3.95 (m, 3H), 6.67 (d, J=6.6 Hz, 2H), 6.75 (d, J=6.6 Hz, 2H); MS (ES) m/z: 183.1 (MH+); HRMS Calcd. for C9H13NO3(MH+): 183.0895. Found: 183.0892.

1. customThe catalyst was then removed
2. filtrationby filtering through a short pad of silica gel
3. customthe solvent was removed