反应详情

A mixture of 2-(4-(8-chloro-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-1-yl)phenyl)-2-methylpropanenitrile (Intermediate 2, 80 mg, 0.22 mmol) and sodium acetate (27.06 mg, 0.33 mmol) was heated at 50° C. in acetic anhydride (2 ml) for 3 hours. Reaction mixture was cooled to RT. Water was added and extracted with chloroform. Chloroform layer was washed with brine, dried over sodium sulfate and concentrated. The crude product was purified by column chromatography (silica gel, 2% acetone in chloroform) to obtain the title compound. Yield: 26 mg (29%); 1H NMR (CDCl3, 300 MHz): δ 9.796 (s, 1H), 8.039-8.070 (d, 1H, J=9.3 Hz), 7.764-7.792 (d, 2H, J=8.4 Hz), 7.499-7.537 (m, 3H), 6.861-6.868 (d, 1H, J=2.1 Hz), 2.822 (s, 3H), 1.83 (s, 6H); MS: m/z 405 (M+).

1. customReaction mixture
2. extractionextracted with chloroform
3. washChloroform layer was washed with brine
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated
6. customThe crude product was purified by column chromatography (silica gel, 2% acetone in chloroform)