Reaktion #2347173

Reaktionsgleichung

HCl

acetyl chloride

5,6,7,8-tetrahydro-3,5,5,8,8-pentamethylnaphthalene

methylene chloride

aluminum chloride

methylene chloride

→

title compound

Methyl (5,6,7,8-tetrahydro-3,5,5,8,8-pentamethylnaphthalen-2-yl) ketone

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigewas recooled to 0° C.
2. 2
   Extraktiontaken-up in water and extracted three times with methylene chloride
3. 3
   WaschenThe organic layers were washed with 1N HCl, water, brine
4. 4
   Trocknendried (MgSO4)
5. 5
   SonstigeSolvent was removed in-vacuo
6. 6
   Sonstigethe resulting residue purified

Vorschrift

To a suspension of 6.71 g (50.3 mmol) of aluminum chloride in methylene chloride at 0° C. under argon was added a solution of 3.95 g (3.58 mL, 50.3 mmol) of acetyl chloride and 10.21 g (41.9 mmol) of 5,6,7,8-tetrahydro-3,5,5,8,8-pentamethylnaphthalene in methylene chloride. The resulting mixture was allowed to warm to room temperature over a period of 3 hours with stirring. The mixture was recooled to 0° C. and 1N HCl was dropwise added. The mixture was then taken-up in water and extracted three times with methylene chloride. The organic layers were washed with 1N HCl, water, brine, and dried (MgSO4). Solvent was removed in-vacuo and the resulting residue purified using flash chromatography to give the title compound as an ivory solid.

Quelle