反应详情

To 4-amino-thiophene-3-carboxylic acid methyl ester hydrochloride (199 mg, 0.994 mmol) in dichloromethane (1.9 mL) and triethylamine (0.29 mL, 2.08 mmol), was slowly added a crude solution of 4-(2-chloro-phenoxy)-butyryl chloride (271 mg, approximately 1.16 mmol) in dichloromethane (1.9 mL). The reaction mixture was stirred for 3 hours at room temperature. The reaction mixture was then further diluted with dichloromethane (50 mL) and washed with water. The aqueous phase was then extracted with dichloromethane and the combined organic phases were dried with sodium sulfate, and concentrated in vacuo. The residue was then purified by column chromatography (SiO2, Heptane/EtOAc: 0-80%) to yield the title compound as a white solid (281 mg, 80%).

1. washwashed with water
2. extractionThe aqueous phase was then extracted with dichloromethane
3. dry with materialthe combined organic phases were dried with sodium sulfate
4. concentrationconcentrated in vacuo
5. customThe residue was then purified by column chromatography (SiO2, Heptane/EtOAc: 0-80%)