Benzoyl chloride with acrylic acid polymerization
Answers
Answer:
Take the acrylic acid up in a suitable solvent (dichloromethane would be typical). While stirring under an inert atmosphere (e.g. nitrogen or argon), add thionyl chloride (~1 molar equivalent) dropwise, then heat the solution to reflux for several hours. Beware as the reaction will liberate HCl, so you will want the reaction vessel to have a vent, preferably bubbled through an aq NaOH solution. After maybe 3-4 hours, distill off the solvent and then distill the product. Boiling pt of the compound is 72-76 deg C at atm. pressure. Note that because thionyl chloride has a very similar bp (79 deg C), it's probably best to use just one equiv of thionyl chloride, such that all will ideally be consumed. Any remaining acrylic acid will stay in the reaction pot (bp is ~140 deg C).
Answer:
Take the acrylic acid up in a suitable solvent (dichloromethane would be typical). While stirring under an inert atmosphere (e.g. nitrogen or argon), add thionyl chloride (~1 molar equivalent) dropwise, then heat the solution to reflux for several hours. Beware as the reaction will liberate HCl, so you will want the reaction vessel to have a vent, preferably bubbled through an aq NaOH solution. After maybe 3-4 hours, distill off the solvent and then distill the product. Boiling pt of the compound is 72-76 deg C at atm. pressure. Note that because thionyl chloride has a very similar bp (79 deg C), it's probably best to use just one equiv of thionyl chloride, such that all will ideally be consumed. Any remaining acrylic acid will stay in the reaction pot (bp is ~140 deg C).