Reaktion #74381

Reaktionsgleichung

(1R,2S,4R,5S)-5-(benzyloxy)bicyclo[2.2.1]heptan-2-ol

pyridinium chlorochromate

→

title compound

(1R,4R,5S)-5-(Benzyloxy)bicyclo[2.2.1]heptan-2-one

Lösungsmittel

dichloromethane

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction mixture was warmed to ambient temperature
2. 2
   Filtrationfiltered through a pad of Celite
3. 3
   SonstigeThe solvent was removed in vacuo
4. 4
   Sonstigethe residue was purified by flash column chromatography (0 to 25% of ethyl acetate in hexanes)

Vorschrift

Silica gel 60 (particle size, 0.040-0.063 mm, CAS # 63231-67-4, from EMD Chemical Inc. 9.0 g) was added to a solution of (1R,2S,4R,5S)-5-(benzyloxy)bicyclo[2.2.1]heptan-2-ol (2.79 g, 12.8 mmol) in anhydrous dichloromethane (60.0 ml). The mixture was cooled to 0° C., and pyridinium chlorochromate (4.40 g, 20.4 mmol) was added. The reaction mixture was warmed to ambient temperature and stirred at this temperature for 5 h. After this time, the mixture was diluted with dichloromethane (60 mL) and then filtered through a pad of Celite. The solvent was removed in vacuo, and the residue was purified by flash column chromatography (0 to 25% of ethyl acetate in hexanes) to give the title compound as a colorless oil.

Quelle