反应详情

0.489 g (2 mmol) of 5-chloro-2-methylsulfonylindan-1-one and 0.095 g (2.5 mmol) of sodium borohydride were suspended in 10 ml of ethanol and placed in an ultrasonic bath for 4 h. The reaction mixture was then acidified with 2N HCl and stirred. The ethanol was distilled off, water and dichloromethane were added to the residue and the mixture was extracted with dichloromethane. The organic phase was separated off, dried over MgSO4, filtered and concentrated and the residue was purified chromatographically on silica gel using dichloromethane/methanol 20/1. This gave 5-chloro-2-methylsulfonylindan-1-ol of melting point 163° C.

1. distillationThe ethanol was distilled off
2. additionwater and dichloromethane were added to the residue
3. extractionthe mixture was extracted with dichloromethane
4. customThe organic phase was separated off
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. customthe residue was purified chromatographically on silica gel