反应详情

温度

70 °C

A microwave tube was charged with a mixture of 2-(dichloromethyl)-[1,2,4]triazolo[5,1-f][1,6]naphthyridine (180 mg, 0.71 mmol) in dimethylamine in water (5 mL, 33% wt in water) and heated at 70° C. in oil bath for 5 h, and then cooled to room temperature. The mixture was extracted with EtOAc (3×20 mL). The combined organic layer was dried over Na2SO4, filtered, and concentrated. The residue was purified by silica gel column chromatography (eluting with DCM/MeOH v/v 100/1 and 50/1) to yield [1,2,4]triazolo[5,1-f][1,6]naphthyridine-2-carbaldehyde as a white solid (85 mg, yield 60%). ESI MS: m/z 199 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 10.22 (s, 1H), 9.06 (m, 1H), 8.97 (m, 1H), 8.56 (d, J=7.2 Hz, 1H), 7.65 (m, 2H).

1. temperaturecooled to room temperature
2. extractionThe mixture was extracted with EtOAc (3×20 mL)
3. dry with materialThe combined organic layer was dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated
6. customThe residue was purified by silica gel column chromatography (
7. washeluting with DCM/MeOH v/v 100/1 and 50/1)