反应详情

To a solution of 50 mg (0.24 mmol) of 4,6-diamino-2-phenyl-nicotinonitrile in 2 mL of CH2Cl2 was added 150 mg (0.70 mmol) of (2,5-dimethoxyphenyl)acetyl chloride (Example 68A), then 100 μL (1.23 mmol) of pyridine. The mixture was stirred at ambient temperature for 10 minutes then the solvent was removed under reduced pressure. The residue was taken up in 10 mL of ethyl acetate, then extracted with 1 M HCl(aq.) (2×5 mL), saturated NaHCO3(aq) (2×5 mL), and brine (1×5 mL), dried over MgSO4, filtered, and concentrated to an oil. This was purified via silica gel chromatography, eluting with 40% ethyl acetate:hexanes to provide 11 mg (12%) of a white solid. 1H NMR (300 MHz, d6-DMSO) δ 10.43 (m, 1H), 7.75 (m, 2H), 7.51 (m, 4H), 6.99 (m, 2H), 6.91 (m, 1H), 6.81 (m, 2H), 3.69 (m, 8H); MS (ESI) m/e 389 (M+H)+, 387 (M−H)−.

1. customthe solvent was removed under reduced pressure
2. extractionextracted with 1 M HCl(aq.) (2×5 mL), saturated NaHCO3(aq) (2×5 mL), and brine (1×5 mL)
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated to an oil
6. customThis was purified via silica gel chromatography
7. washeluting with 40% ethyl acetate