2-Propenoic acid, 3-(4-chlorophenyl)- → 4-Chlorocinnamoyl chloride

Participants

Reaction Steps

Thionyl chloride (28.6 g.) was added dropwise to a benzene (300 ml.) solution of p-chlorocinnamic acid (36.5 g.) under stirring. The resulting solution was heated under reflux for 1 hour, then the solvent was evaporated under reduced pressure on a rotary evaporator to give the product, which melted at 78°-80° and weighed 40 g.

Provenance & Evidence