Reaktion #44486

Reaktionsgleichung

solution

4-(tert-Butyl-dimethyl-silanyloxymethyl)-1-cycloheptyl-3,3-dimethyl-pyrrolidin-2-one

Dess-Martin periodinane

→

title compound

1-Cycloheptyl-4,4-dimethyl-5-oxo-pyrrolidine-3-carbaldehyde

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was evaporated in vacuo
2. 2
   workup.STIRRINGstirred at room temperature for two hours
3. 3
   SonstigeThe reaction was quenched with 10% sodium bisulfite
4. 4
   Extraktionextracted with dichloromethane
5. 5
   WaschenThe organic phase was washed with water
6. 6
   Trocknendried with MgSO4
7. 7
   Filtrationfiltered
8. 8
   Sonstigeevaporated in vacuo

Vorschrift

To a solution of Example 1D (0.168 mg, 0.475 mmoles) in methanol (1.5 mL), two drops of 12M HCl was added and stirred for one hour. The solvent was evaporated in vacuo. The residue was taken in dichloromethane (2.5 mL) and Dess-Martin periodinane (0.25 gm, 0.593 mmoles) was added and stirred at room temperature for two hours. The reaction was quenched with 10% sodium bisulfite and extracted with dichloromethane. The organic phase was washed with water, dried with MgSO4, filtered, and evaporated in vacuo to provide the title compound.

Quelle