反应详情

2-Oxo-1,2-dihydropyridine-4-carboxylic acid (5.0 g, 36 mmol) and potassium carbonate (24.8 g, 179 mmol) were stirred in DMF (75 mL) at room temperature. Iodomethane (6.72 mL, 108 mmol) was added slowly via a syringe and the reaction mixture was stirred for 3 days at room temperature. The reaction mixture was then diluted with water and extracted with dichloromethane until the product was removed from the aqueous phase. The combined organics were dried over magnesium sulfate, filtered and concentrated, then chromatographed in ethyl acetate on silica gel to yield the title compound (4 g, 66%).

1. extractionextracted with dichloromethane until the product
2. customwas removed from the aqueous phase
3. dry with materialThe combined organics were dried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated
6. customchromatographed in ethyl acetate on silica gel