反应详情

To N-(5-amino-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide (67) (4.53 g, 15 mmol) in MeOH (100 mL) was added KOAc (4.41 g, 45 mmol) and the mixture was stirred at room temperature for 5 minutes then cooled to 0° C. before a solution of BrCN (1.62 g, 15 mmol) in MeOH (30 mL) was added dropwise. The resulting mixture was slowly warmed to room temperature and stirred overnight. The solvent was evaporated and to the residue was added water (150 mL). The mixture was stirred at room temperature for 1 hour, filtered and washed with water (2×20 mL), then air dried to give N-(5-cyanamido-2-methylphenyl)imidazo[1,2-a]pyridine-3-carboxamide (68) as a white solid.

1. additionwas added dropwise
2. temperatureThe resulting mixture was slowly warmed to room temperature
3. stirringstirred overnight
4. customThe solvent was evaporated and to the residue
5. additionwas added water (150 mL)
6. stirringThe mixture was stirred at room temperature for 1 hour
7. filtrationfiltered
8. washwashed with water (2×20 mL)
9. customair dried