反应详情

Sodium borohydride (3.78 g) was added to isopropyl alcohol (50 ml) and the mixture was stirred under ice-cooling. Thereto was dropwise added 4-(methylthio)benzaldehyde (15 g) and the mixture was stirred at room temperature for 30 minutes. The solvent was distilled away and water was added to the residue. The mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was distilled away and the residue obtained was recrystallized from hexane-ethyl acetate to give the subject compound (15 g) as white crystals. melting point=41-43° C.

1. temperaturecooling
2. stirringthe mixture was stirred at room temperature for 30 minutes
3. distillationThe solvent was distilled away
4. additionwater was added to the residue
5. extractionThe mixture was extracted with ethyl acetate
6. washThe organic layer was washed with saturated brine
7. dry with materialdried over anhydrous sodium sulfate
8. distillationThe solvent was distilled away
9. customthe residue obtained
10. customwas recrystallized from hexane-ethyl acetate