Ammonia → HCID 58109378, compound

Participants

Reaction Steps

To a solution of 3-((R)-3-((S)-1-(4-(difluoromethoxy)phenyl)ethyl)-6-(4-fluorophenyl)-2-oxo-1,3-oxazinan-6-yl)propanoic acid (0.0485 g, 0.11 mmol) in DMF (2 mL) was added HATU (0.2603 g, 0.68 mmol), DIPEA (0.5 mL), and 0.8 M NH3 in THF (3 mL). The mixture was stirred at rt for 22 h. After the solvents were removed in vacuo, the residue was purified by reversed-phase HPLC (SunFire™ Prep C18 OBD™ 5 μm 19×50 mm column, 10%→90% CH3CN/H2O, 0.1% CF3COOH over 8 min and then 90% CH3CN/H2O, 0.1% CF3COOH over 2 min, flow rate 20 mL/min) to afford 0.0235 g (49%) of 3-((R)-3-((S)-1-(4-(difluoromethoxy)phenyl)ethyl)-6-(4-fluorophenyl)-2-oxo-1,3-oxazinan-6-yl)propanamide. LC-MS Method 1 tR=1.48 min, m/z 459 (MNa+), 393; 1H NMR (400 MHz, CDCl3) δ 7.23-7.20 (m, 2H), 7.04-6.99 (m, 2H), 6.95 (d, J=8.2 Hz, 2H), 6.89 (d, J=8.5 Hz, 2H), 6.43 (t, J=73.8 Hz, 1H), 5.83-5.78 (m, 2H), 5.62 (q, J=7.0 Hz, 1H), 2.95-2.91 (m, 1H), 2.45 (m, 1H), 2.27-2.15 (m, 5H), 1.98 (m, 1H), 1.49 (d, J=7.0 Hz, 3H); 19F NMR (376 MHz, CDCl3) δ −81.51 (d, J=73.7 Hz), −114.66 (m).

Provenance & Evidence