反应详情

A mixture of 65 grams (0.30 mol) of resorcinol monobenzoate, 50 grams (0.32 mol) of isocyanatoethyl methacrylate, 1.05 grams of dibutyltin dilaurate and 400 ml. of chloroform was heated under reflux for 4 hours. The solvent was then removed by vacuum stripping and the residue was recrystallized from a mixture of ethyl acetate and hexane. There was obtained 100.5 grams (87% of theoretical) of the desired 3-benzoyloxyphenyl 2-methacryloxyethylcarbamate having a melting point of 57.5°-61.5° C.

1. temperatureunder reflux for 4 hours
2. customThe solvent was then removed by vacuum stripping
3. customthe residue was recrystallized from a mixture of ethyl acetate and hexane