(2-Cyclopropyl-4'-fluoro-5-isopropoxybiphenyl-4-yl)methanol → 2-Cyclopropyl-4'-fluoro-5-isopropoxybiphenyl-4-carbaldehyde
Reaktionsgleichung
[CH:1]1([C:4]2[CH:9]=[C:8]([CH2:10][OH:11])[C:7]([O:12][CH:13]([CH3:15])[CH3:14])=[CH:6][C:5]=2[C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][CH:17]=2)[CH2:3][CH2:2]1>[O-2].[O-2].[Mn+4].C1(C)C=CC=CC=1>[CH:1]1([C:4]2[CH:9]=[C:8]([CH:10]=[O:11])[C:7]([O:12][CH:13]([CH3:15])[CH3:14])=[CH:6][C:5]=2[C:16]2[CH:17]=[CH:18][C:19]([F:22])=[CH:20][CH:21]=2)[CH2:3][CH2:2]1Komponenten
4
Versuchsvorschrift
Manganese dioxide (16.6 g) was added to a toluene (80 mL) solution of (2-cyclopropyl-4′-fluoro-5-isopropoxybiphenyl-4-yl)methanol (5.75 g), and the mixture was stirred at 60 C for 1 hour in a nitrogen atmosphere. The reaction mixture was filtered, and then, the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (4.54 g).