反应详情

A solution of ethyl 2-(3-amino-4-hydroxyphenyl)propionate (10.46 g.) and acetic anhydride (5.6 g.) in dry pyridine (50 ml.) was heated on a steam bath for 1.25 hours. The reaction mixture was poured into water (500 ml.), precipitating an oil. On cooling the oil solidified. The solid was removed by filtration and washed with water. After drying, ethyl 2-(3-acetamido-4-hydroxyphenyl)propionate (8.25 g.) was obtained, m.p. 137°-141°C.

1. customprecipitating an oil
2. temperatureOn cooling the oil
3. customThe solid was removed by filtration
4. washwashed with water
5. customAfter drying