反应详情

2′,4′-Dichloro-biphenyl-4-carboxylic acid (2 g) was suspended in toluene (30 mL) and thionyl chloride (5 mL) added. The mixture was heated to reflux for 4 hours and then evaporated to dryness and the procedure repeated. Evaporation gave the title compound as a white solid.

1. temperatureThe mixture was heated
2. temperatureto reflux for 4 hours
3. customevaporated to dryness
4. customEvaporation