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 (18 h). The dark mixture was then diluted with water (1500 mL) and sat. sodium bicarbonate solution was added until the pH reached 8. The precipitate was collected by filtration, rinsed with water (30 mL×3) and dried to afford N-(2-chloro-5-methylpyridin-3-yl)-2-nitrobenzamide as a pale solid (17.70 g, yield: 91%).

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