反应详情

A mixture of ethyl p-methylcinnamate (19.0 g., 0.1 mole), N-bromosuccinimide (19.6 g., 0.11 mole), benzoyl peroxide (200 mg.), and carbon tetrachloride is stirred and heated at reflux for 4 hours. The mixture is cooled and succinimide removed by filtration. The filtrate is washed with 5% sodium hydroxide solution, water, and brine, and dried over sodium sulfate. The solvent is removed at reduced pressure, and the residue is distilled in vacuo to yield 14.8 g. (55%) of the title compound, b.p. 137°-140° C. (0.1 mm.).

1. temperatureheated
2. temperatureat reflux for 4 hours
3. temperatureThe mixture is cooled
4. customsuccinimide removed by filtration
5. washThe filtrate is washed with 5% sodium hydroxide solution, water, and brine
6. dry with materialdried over sodium sulfate
7. customThe solvent is removed at reduced pressure
8. distillationthe residue is distilled in vacuo
9. customto yield 14.8 g