反应详情

To a solution of 5-amino-6-chloro-3-picoline (9.54 g, 66.9 mmol) in pyridine (200 mL) was added 2-nitrobenzoyl chloride (13.65 g, 73.6 mmol) dropwise at 0° C. The resulting mixture was stirred at room temperature for 18 h. The dark mixture was then diluted with water (1500 mL) and sat. sodium bicarbonate solution was added until pH=8. The precipitate was collected by filtration, rinsed with water (30 mL×3) and dried in oven to afford N-(2-chloro-5-methylpyridin-3-yl)-2-nitrobenzamide as a pale solid (17.70 g, yield: 91%).

1. additionwas added until pH=8
2. filtrationThe precipitate was collected by filtration
3. washrinsed with water (30 mL×3)
4. customdried in oven