反应详情

温度

80 °C

To a suspension of ethyl 2-anilino-5-phenylthiophene-3-carboxylate (51.7 mg, 0.160 mmol) in ethanol (3 mL) was added water (0.6 mL) and aqueous sodium hydroxide solution (2 M, 0.400 ml, 0.799 mmol). The reaction suspension was heated to 80° C. to afford a clear yellow solution; after one hour the suspension was allowed to cool to room temperature before being diluted with an aqueous hydrogen chloride solution (2 M, 1 mL), water (1.5 mL), and ethyl acetate (10 mL). The layers were separated and the aqueous layer was extracted with ethyl acetate (5 mL). The combined organic layers were combined and concentrated to afford 2-anilino-5-phenylthiophene-3-carboxylic acid.

1. customto afford a clear yellow solution
2. temperatureto cool to room temperature
3. customThe layers were separated
4. extractionthe aqueous layer was extracted with ethyl acetate (5 mL)
5. concentrationconcentrated