反应详情

To 50 ml of butanol into which hydrogen chloride gas was introduced beforehand for about 10 minutes, was added 2 g of caffeic acid. The resulting mixture was heated at 90° to 100° C. and stirred for 3 hours. The reaction product was concentrated under a reduced pressure, and the residue obtained was purified by means of chromatography and then recrystallized from ether/hexane to give 1.4 g of caffeic acid butyl ester.

1. temperatureThe resulting mixture was heated at 90° to 100° C.
2. concentrationThe reaction product was concentrated under a reduced pressure
3. customthe residue obtained
4. customwas purified by means of chromatography
5. customrecrystallized from ether/hexane