Réaction #64824

Équation de réaction

α-cyanocinnamic acid

thionyl chloride

→

α-cyanocinnamoyl chloride

Solvants

benzene

Conditions de réaction

Traitement

1. 1
   Autreat ambient temperature
2. 2
   Autrewas elevated to 70° C.
3. 3
   workup.DISTILLATIONBenzene and thionyl chloride were distilled off
4. 4
   Autrethe residue was dried thoroughly under reduced pressure

Mode opératoire

100 ml of benzene was added to 17.3 grams of α-cyanocinnamic 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.

Source