反应详情

温度

170 °C

Under argon, to a suspension of 4-(6-bromo-1-ethyl-1H-imidazo[4,5-c]pyridin-2-yl)-furazan-3-amine (prepared by the method of Example 8, Steps 3-7, substituting ethylamine for aniline in Step 3) (80 mg, 0.26 mmol) in toluene (4 mL) and DME (4 mL), was added the product of Step 4 (78 mg, 0.31 mmol), CuI (50 mg, 0.26 mmol), 1,10-phenanthroline (94 mg, 0.52 mmol), and Cs2CO3 (170 mg, 0.52 mmol). This mixture was then heated to 170° C. by microwave for 15 min. The reaction mixture was added DMSO (1.5 mL), diluted with EtOAC/MeOH, sonicated for 10 min, then filtered and concentrated. The residue was purified with reverse phase HPLC (10% MeCN/H2O→80% MeCN/H2O, containing 0.1% TFA), to afford the title compound as a pale yellow solid (66 mg, 43%). MS (ES+) m/e 478 [M+H]+.

1. customprepared by the method of Example 8, Steps 3-7
2. customsonicated for 10 min
3. filtrationfiltered
4. concentrationconcentrated
5. customThe residue was purified with reverse phase HPLC (10% MeCN/H2O→80% MeCN/H2O, containing 0.1% TFA)