O-Xylene → 1,1,4,4,6,7-Hexamethyl-1,2,3,4-tetrahydronaphthalene
Reaktionsgleichung
[Cl-].[Al+3].[Cl-].[Cl-].Cl[C:6]([CH3:14])([CH2:8][CH2:9][C:10](Cl)([CH3:12])[CH3:11])[CH3:7].[C:15]1([CH3:22])[C:16]([CH3:21])=[CH:17][CH:18]=[CH:19][CH:20]=1>>[CH3:22][C:15]1[C:16]([CH3:21])=[CH:17][C:18]2[C:10]([CH3:12])([CH3:11])[CH2:9][CH2:8][C:6]([CH3:14])([CH3:7])[C:19]=2[CH:20]=1Komponenten
4
Versuchsvorschrift
7 g of aluminum chloride was added by portions to 200 ml solution of 50 g 2,5-dichloro-2,5-dimethylhexane in orthoxylene at 0° C. under stirring. After the mixture was stirred at the same temperature for 15 minutes, it was poured into ice-cold water and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate and then evaporated to give 60 g of 2,3,5,5,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalene as a brown oil.