[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]2[CH:18]=[CH:17][C:12]([C:13](OC)=[O:14])=[CH:11][CH:10]=2)=[CH:5][CH:4]=1.[H-].[Al+3].[Li+].[H-].[H-].[H-].O.[OH-].[Na+]>O1CCCC1>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([C:9]2[CH:18]=[CH:17][C:12]([CH2:13][OH:14])=[CH:11][CH:10]=2)=[CH:7][CH:8]=1Methyl 4-(4′-methoxyphenyl)benzoate (3.0 g, 12.3 mmol) was added in portions to a suspension of lithium aluminum hydride (0.94 g, 25.0 mmol) in tetrahydrofuran (40 ml) at room temperature for 20 minutes with stirring. The reaction solution was refluxed for 2 hours under heating and cooled to 0° C. To the residue was added water (1 ml) and 1 N aqueous sodium hydroxide (3 ml), the insoluble matter was filtered out and the filtrate was concentrated under reduced pressure. The object compound (1.2 g) was obtained from the residue as colorless crystals.
Wird geladen…