反应详情

温度

65 °C

A solution of 1,1-dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoate (5.66 g, 16.8 mmol), HCl (4M in dioxane, 40 mL) and MeOH (100 mL) was stirred at 65° C. for 2 h. After cooling, the reaction was concentrated. To the residue, K2CO3 (325 mesh, 6.6 g, 47.5 mmol) and MeOH (150 mL) were added and the reaction was stirred at 65° C. for 1 h. Solvent was removed and the residue was partitioned between EtOAc and H2O. The organic layer was dried over MgSO4 and concentrated to give the product as a white solid (2.4 g, 54%). LC-MS (ES) m/e 264.4 (M+H)+.

1. temperatureAfter cooling
2. concentrationthe reaction was concentrated
3. customSolvent was removed
4. customthe residue was partitioned between EtOAc and H2O
5. dry with materialThe organic layer was dried over MgSO4
6. concentrationconcentrated