[C:1]([C:4]1[C:5]([OH:14])=[CH:6][C:7]2[CH2:8][CH2:9][CH2:10][CH2:11][C:12]=2[CH:13]=1)(=[O:3])[CH3:2].[CH3:15][O:16]C(Cl)Cl>ClCCl.[Ti](Cl)(Cl)(Cl)Cl>[C:1]([C:4]1[C:5]([OH:14])=[C:6]([CH:15]=[O:16])[C:7]2[CH2:8][CH2:9][CH2:10][CH2:11][C:12]=2[CH:13]=1)(=[O:3])[CH3:2]To a solution of 5,6,7,8-tetrahydro-3-acetyl-2-naphthol (9.5 g) in dry dichloromethane (50 ml), cooled in an ice bath, was added titanium tetrachloride (38 g) over a period of three minutes. After fifteen minutes stirring dichloromethyl methyl ether (8.05 g) was added over a period of five minutes. The mixture was retained in the ice bath for a further ten minutes, then stirred without cooling for thirty minutes, and finally warmed to 35° for twenty minutes.
Wird geladen…
