反应详情

To a solution of the product of Example 30 (90 mg, 0.2 mmol) in methanol (5 mL) was added sodium methoxide (1 mL of 25% w/w solution in methanol, excess). The reaction mixture turned yellow and was heated under reflux for 2 h evaporated and H2O (5 mL), then EtOAc (20 mL), was added. The layers were separated. The organic layer was washed with satd aq NaCl, dried (MgSO4), filtered and evaporated. The yellow residue was then purified by Flash chromatography to afford 71 mg (83% yield) of 8-(2,6-difluoro-phenyl)-4-(4-fluoro-2-methyl-phenyl)-2-methoxy-8H-pyrido[2,3-d]pyrimidin-7-one. 1H-NMR (CDCl3) δ 2.30 (s, 3H), 3.82 (s, 3H), 6.61 (d, 1H, J=9.7 Hz), 7.01-7.18 (m, 4H), 7.25 (m, 1H), 7.52 (m, 2H); LC MS (m/e)=398 (MH+).

1. temperaturewas heated
2. temperatureunder reflux for 2 h
3. customevaporated
4. additionH2O (5 mL), then EtOAc (20 mL), was added
5. customThe layers were separated
6. washThe organic layer was washed with satd aq NaCl
7. dry with materialdried (MgSO4)
8. filtrationfiltered
9. customevaporated
10. customThe yellow residue was then purified by Flash chromatography