81971-39-3

5-Bromopyridin-2(1H)-one (8.6 g, 0.05 mol) was dissolved in THF (120 mL) at 0 °C and slowly added to a suspension of NaH (4.8 g, 0.2 mol) in THF (10 mL). The reaction mixture was stirred at 0 °C for 1 hour. Subsequently, iodomethane (35.5 g, 0.25 mol) was added dropwise to the mixture and stirring was continued for 3 hours at room temperature. After completion of the reaction, the reaction was quenched with saturated aqueous NH4Cl solution. The organic phase was separated and concentrated to give the crude product. The crude product was purified by column chromatography to afford 5-bromo-1-methylpyridin-2(1H)-one (8.9 g, 96.78% yield).1H NMR (CDCl3): δ= 3.5 (s, 3H), 6.52 (m, 1H), 7.32 (m, 1H), 7.45 (m, 1H).

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