反应详情

3-chloro-2-nitropyridine (30.6 g, 193 mmol) was dissolved in DMSO (200 mL). Benzenethiol (20.7 mL, 203 mmol) was added followed by cesium carbonate (69.3 g, 212 mmol) and stirred at ambient temperature for 1.5 hours. The solution was diluted with water (750 mL) and the solids filtered. The crude material was recrystallized from EtOAc (400 mL) and with adding hexanes (1 L) to give an A-crop of 23.5 g. The filtrate was concentrated and recrystallized from EtOAc/hexanes to give 7.87 g. The solids were dried on high vacuum to provide the title compound (31.38 g, 69.8% yield).

1. filtrationthe solids filtered
2. customThe crude material was recrystallized from EtOAc (400 mL) and with adding hexanes (1 L)
3. customto give an A-crop of 23.5 g
4. concentrationThe filtrate was concentrated
5. customrecrystallized from EtOAc/hexanes
6. customto give 7.87 g
7. customThe solids were dried on high vacuum