反应详情

温度

60 °C

To a 250 mL round-bottomed flask was added N-(6-bromoH-imidazo[1,2-a]pyridin-2-yl)-2,2,2-trifluoroacetamide (3.50 g, 11 mmol), THF (15 mL), methanol (15 mL), water (15 mL) and potassium carbonate (16 g, 114 mmol). The mixture was stirred at 60° C. for 16 h. After cooling to rt, the mixture was poured into water (100 mL) and extracted with CH2Cl2 (4×75 mL). The combined extracts were washed with brine, dried (Na2SO4) and concentrated onto silica. Purification by silica gel chromatography (0.5 to 5.0% MeOH/CH2Cl2) afforded the title compound (1.01 g, 42%). MS (ESI, positive ion) m/z: 212 (M(79Br)+1).

1. temperatureAfter cooling to rt
2. extractionextracted with CH2Cl2 (4×75 mL)
3. washThe combined extracts were washed with brine
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated onto silica
6. customPurification by silica gel chromatography (0.5 to 5.0% MeOH/CH2Cl2)