反应详情

(R)-3-bromo-2-hydroxy-N-(4-methoxyphenyl)-2-methylpropanamide (6b) (5.80 g, 20.13 mmol) and K2CO3 (5.56 g, 40.26 mmol) were placed in a 500 mL round-bottomed flask fitted with a stirring bar. 150 mL of acetone was added at room temperature. The reaction solution was heated to reflux for 3 hours. The solvent was removed under reduced pressure. The residue was purified by flash column chromatography (silica gel, EtOAc/hexanes=1/1 v/v) to give a white solid product, (S)—N-(4-methoxyphenyl)-2-methyloxirane-2-carboxamide, 4.00 g, 96.0% yield.

1. customfitted with a stirring bar
2. temperatureThe reaction solution was heated
3. temperatureto reflux for 3 hours
4. customThe solvent was removed under reduced pressure
5. customThe residue was purified by flash column chromatography (silica gel, EtOAc/hexanes=1/1 v/v)