反应详情

p-Bromomethyl benzoic acid (10.5 g., 0.05 moles) is charged to a round-bottom flask equipped with a magnetic stirrer. Thionyl chloride (50 ml.) is added thereto and the mixture heated under reflux with stirring. After approximately 10 minutes the solid material is dissolved. The heating under reflux is continued for an additional 30 minutes, the clear solution stoppered and cooled in a dry atmosphere. The excess thionyl chloride is removed using a rotary evaporator to yield p-bromomethyl benzoyl chloride (m.p. 56°-58°). This product is not further purified but utilized in the next stage of the reaction.

1. customequipped with a magnetic stirrer
2. temperaturethe mixture heated
3. temperatureunder reflux
4. dissolutionAfter approximately 10 minutes the solid material is dissolved
5. temperatureThe heating under reflux
6. temperaturecooled in a dry atmosphere
7. customThe excess thionyl chloride is removed
8. customa rotary evaporator