反应详情

To a stirring reaction mixture of 3-methoxypyridine-2-one (0.2 g, 1.6 mmol) and KOH (0.18 g, 3.2 mmol) in methanol was added MeI (0.68 g, 4.8 mmol) dropwise in condenser equipped round bottom flask. After overnight stirring at room temperature revealed quantitative formation of product. Reaction mixture was then diluted with water (35 mL) and CHCl3 (40 mL). Organic layer was washed with water (1×35 mL), brine (1×30 mL) and dried over Na2SO4 and solvent was evaporated in vacua to yield pure 141a (0.20 g, 89%) as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 6.66 (m, 1H), 6.35 (d, J=7.4 Hz, 1H), 5.83 (t, J=7.1 Hz, 1H), 3.52 (s, 3H), 3.28 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 158.01, 149.56, 128.81, 111.91, 104.31, 55.44, 37.10.

1. customequipped round bottom flask
2. customReaction mixture
3. washOrganic layer was washed with water (1×35 mL), brine (1×30 mL)
4. dry with materialdried over Na2SO4 and solvent
5. customwas evaporated in vacua