反应详情

100 ml of benzene was added to 17.8 grams of p-methoxycinnamic acid. 12 ml of thionyl chloride was added dropwise slowly thereto at ambient temperature. The temperature was elevated to 70° C. and the heating was continued until foaming ceased. Benzene and thionyl chloride were distilled off and the residue was dried thoroughly under reduced pressure.

1. customat ambient temperature
2. customwas elevated to 70° C.
3. distillationBenzene and thionyl chloride were distilled off
4. customthe residue was dried thoroughly under reduced pressure