反应详情

Thionyl chloride (38 g.) was added dropwise to a mixture of 3-methoxycinnamic acid (50 g.) and benzene (500 ml.), and the resulting mixture was heated under reflux for 1.5 hours, then evaporated under reduced pressure on a rotary evaporator to give an oil. The oil solidified on standing at room temperature, giving 59 g. of the product. Analytical sample (m.p. 43°-45°) was obtained by recrystallization from petroleum ether.

1. temperaturethe resulting mixture was heated
2. temperatureunder reflux for 1.5 hours
3. customevaporated under reduced pressure on a rotary evaporator
4. customto give an oil
5. customon standing at room temperature
6. customgiving 59 g