反应详情

To a mixture of methyl 3-(2-(5-bromo-3-phenoxypyridin-2-ylamino)thiazol-4-yl)propanoate (0.100 g, 0.230 mmol) in 10 mL THF, and 5 mL water was added sodium hydroxide (0.0368 g, 0.921 mmol) and the reaction was stirred overnight. The mixture was concentrated to dryness. Water was added and washed with Et2O and EtOAc. The aqueous was acidified with a saturated NH4Cl solution, extracted with 3:1 CH2Cl2-THF. The organics were dried over Na2SO4 and concentrated to a residue. The crude solids were recrystallized from EtOAc/Hexanes to give the title compound (0.050 g, 51.7% yield). 1H NMR (d6DMSO) δ 2.58 (t, J=7.5 Hz, 2H), 2.81 (t, J=7.5 Hz, 2H), 6.66 (s, 1H), 7.10 (d, J=7.8 Hz, 2H), 7.21 (t, J=7.4 Hz, 1H), 7.39 (d, J=2.0 Hz, 1H), 7.44 (t, J=8.0 Hz, 2H), 8.21 (d, J=2.0 Hz, 1H).

1. concentrationThe mixture was concentrated to dryness
2. additionWater was added
3. washwashed with Et2O and EtOAc
4. extractionextracted with 3:1 CH2Cl2-THF
5. dry with materialThe organics were dried over Na2SO4
6. concentrationconcentrated to a residue
7. customThe crude solids were recrystallized from EtOAc/Hexanes