反应详情

226 mg of (±)-cis-2-(4-methoxyphenyl)-3-hydroxy-7,8-dimethyl-2,3-dihydro-1,5-benzothiazepin-4(5H)-one are suspended in 2 ml of pyridine, and 59 mg of acetyl chloride are added thereto under ice-cooling. The mixture is stirred at room temperature for 2 hours. After the reaction is completed, ethyl acetate-chloroform (1:1) is added to the reaction mixture. The mixture is washed with 10% hydrochlric acid and water, successively. Then, the mixture is dried and evaporated under reduced pressure to remove solvent. 219 mg of (±)-cis-2-(4-methoxyphenyl)-3-acetoxy-7,8-dimethyl-2,3-dihydro-1,5-benzothiazepin-4(5H)-one are obtained.

1. temperatureunder ice-cooling
2. washThe mixture is washed with 10% hydrochlric acid and water
3. customThen, the mixture is dried
4. customevaporated under reduced pressure
5. customto remove solvent