反应详情

1.4 g of sodium borohydride are added to a suspension, at 0-5° C., of 5.2 g of the product obtained in Step 2 in 150 ml of methanol. After 15 minutes at that temperature and then 1 hour at room temperature, the reaction mixture is poured into 300 g of ice and extracted with dichloromethane. After customary treatment, 5.2 g of the expected product are isolated.

1. extractionextracted with dichloromethane