反应详情

Iodine monochloride (1.39 mL; 27.77 mmol) was added to a solution of 3,4-dichloroaniline (4.50 g; 27.77 mmol) in acetic acid (15 mL) and the resulting mixture was stirred for 30 minutes at room temperature. The solution was concentrated to dryness, neutralized with sodium bicarbonate and extracted with dichloromethane. The combined organic layers were washed with a saturated solution of sodium thiosulfate, dried and concentrated under reduced pressure. The crude material was purified by flash chromatography on silica gel (eluent 2 to 20% ethyl acetate in heptane) to afford 3.46 g (43%) of the title compound as a brown solid.

1. concentrationThe solution was concentrated to dryness
2. extractionextracted with dichloromethane
3. washThe combined organic layers were washed with a saturated solution of sodium thiosulfate
4. customdried
5. concentrationconcentrated under reduced pressure
6. customThe crude material was purified by flash chromatography on silica gel (eluent 2 to 20% ethyl acetate in heptane)