反应详情

温度

50 °C

To a solution of (1R,3S)-ethyl 3-(2-chloro-5-fluoropyrimidin-4-ylamino)cyclohexane-carboxylate, 19, (20.0 g, 66.3 mmol) in THF (150 mL) was added added a solution of LiOH hydrate (8.3 g, 198.8 mmol) in 100 ml water. The reaction mixture was stirred at 50° C. overnight, To the reaction mixture was added HCl (16.6 mL of 12 M solution, 198.8 mmol) and EtOAc. The organic phase was washed with brine and dried over MgSO4 and the solvent was removed under reduced pressure to afford 17.5 g of product that was used without further purification: 1H NMR (300 MHz, CDCl3) δ 7.91 (d, J=2.7 Hz, 2H), 5.24 (d, J=7.3 Hz, 2H), 4.19-4.03 (m, 3H), 3.84-3.68 (m, 3H), 2.59 (ddd, J=11.5, 8.2, 3.6 Hz, 2H), 2.38 (d, J=12.4 Hz, 2H), 2.08 (d, J=9.6 Hz, 6H), 1.99-1.76 (m, 5H), 1.63-1.34 (m, 6H), 1.32-1.15 (m, 4H).

1. washThe organic phase was washed with brine
2. dry with materialdried over MgSO4
3. customthe solvent was removed under reduced pressure