反应详情

To a solution of 7-chloro-5-oxo-1-[6-(2-methylbenzoylamino)nicotinoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.3 g) in methanol (5 ml) is added with stirring sodium borohydride (0.05 g) under ice-cooling, and the mixture is stirred at room temperature for one hour. To the reaction solution is added water, and the mixture is extracted with dichloromethane. The extract is washed with water, and dried over magnesium sulfate. The resultant is evaporated under reduced pressure to remove the solvent, and the residue is purified by silica gel column chromatography to give 7-chloro-5-hydroxy-1-[6-(2-methylbenzoylamino)nicotinoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.2 g) as colorless amorphous.

1. temperaturecooling
2. extractionthe mixture is extracted with dichloromethane
3. washThe extract is washed with water
4. dry with materialdried over magnesium sulfate
5. customThe resultant is evaporated under reduced pressure
6. customto remove the solvent
7. customthe residue is purified by silica gel column chromatography