反应详情

To a solution of 5-[cyano-(5-isopropyl-2,6-dimethoxy-pyrimidin-4-yl)-methyl]-isophthalonitrile (0.2457 g, 0.707 mmol) in DMF (2.4 mL) was added 60% sodium hydride (0.031 g, 0.778 mmol) and stirred for 30 min. Oxygen was bubbled into reaction mixture for 4 h. The reaction was quenched with saturated ammonium chloride solution and pH was adjusted to ˜6.0 with 1N HCl. Mixture was extracted with ethyl acetate and organic layer was washed with water (2×), dried (MgSO4) and concentrated. The resulting residue was purified by flash column chromatography (silica gel, 10 to 50% ethyl acetate/hexane) to give a white foam (0.018 g, 8%). 1H NMR (300 MHz, CDCl3): δ 8.32 (s, 2H); 8.08 (s, 1H), 4.05 (s, 3H), 3.89 (s, 3H), 3.0-2.8 (m, 1H), 1.19 (s, 3H), 1.42 (s, 3H). Mass spectrum: 337.2 (M+H)+.

1. customOxygen was bubbled into reaction mixture for 4 h
2. customThe reaction was quenched with saturated ammonium chloride solution and pH
3. extractionMixture was extracted with ethyl acetate and organic layer
4. washwas washed with water (2×)
5. dry with materialdried (MgSO4)
6. concentrationconcentrated
7. customThe resulting residue was purified by flash column chromatography (silica gel, 10 to 50% ethyl acetate/hexane)