反应详情

温度

135 °C

To a suspension of 6-hydroxy-1-methyl-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (See Compound 36, step 2, 500 mg, 1.49 mmol), CuI (85.2 mg, 0.45 mmol), Cs2CO3 (971.6 mg, 2.98 mmol) and 2-(dimethylamino)acetic acid (76.87 mg, 0.75 mmol) in dioxane (20 mL) was added 5-bromo-2-methylpyridine (641.2 mg, 3.73 mmol). The reaction was heated at 135° C. for 5 h followed by heating at 100° C. for 18 h, cooled to RT then diluted with EA (25 mL) and water (10 mL). The organic layer was washed with water (20 mL) and brine (20 mL), dried over Na2SO4 and concentrated to residue which was purified by chromatography eluted with PE/EA (5:1 to 1:1) to give 1-methyl-6-((6-methylpyridin-3-yl)oxy)-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (490 mg, 77.1% yield) as a yellow oil. LCMS: [MH+-THP] 343 and TR=1.215 min.

1. temperatureby heating at 100° C. for 18 h
2. temperaturecooled to RT
3. washThe organic layer was washed with water (20 mL) and brine (20 mL)
4. dry with materialdried over Na2SO4
5. concentrationconcentrated to residue which
6. customwas purified by chromatography
7. washeluted with PE/EA (5:1 to 1:1)