反应详情

To a solution of 4′-chlorobiphenyl-4-sulfonic acid 12a (15.1 g ,78.1 mmol)in thionyl chloride (150 mL) is added a catalytic amount of N,N-dimethylformamide (0.3 mL). The reaction mixture is heated to reflux for 4 hr. The mixture is then cooled to room temperature, and concentrated under reduced pressure. Toluene is then added and the mixture is concentrated under reduced pressure. The solid crude product is then recrystallized with ethyl acetate and hexanes to give the solid desired product.

1. temperatureThe reaction mixture is heated
2. temperatureto reflux for 4 hr
3. concentrationconcentrated under reduced pressure
4. additionToluene is then added
5. concentrationthe mixture is concentrated under reduced pressure
6. customThe solid crude product is then recrystallized with ethyl acetate and hexanes