(2-Fluoro-5-(2-fluoropyridin-3-yl)phenyl)methanol → 2-Fluoro-5-(2-fluoropyridin-3-yl)benzaldehyde
反応式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([F:14])=[N:10][CH:11]=[CH:12][CH:13]=2)=[CH:4][C:3]=1[CH2:15][OH:16].[Cr](Cl)([O-])(=O)=O.[NH+]1C=CC=CC=1>ClCCl>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([F:14])=[N:10][CH:11]=[CH:12][CH:13]=2)=[CH:4][C:3]=1[CH:15]=[O:16]参加物
4
実験手順
(2-Fluoro-5-(2-fluoropyridin-3-yl)phenyl)methanol (2.54 g) was dissolved in dichloromethane (200 mL). Silica gel (30 mL) was added followed by pyridinium chlorochromate (5.31 g, 24.63 mmol). It was stirred at RT and monitored by TLC. Once the oxidation was complete the mixture was filtered through a pad of silica gel (10 mL) and washed with ethyl acetate. Evaporation under reduced pressure gave the desired 2-fluoro-5-(2-fluoropyridin-3-yl)benzaldehyde (4.71 g, 21.49 mmol, 87% yield) as an off white solid. MS m/z=220.1 [M+H]+. Calculated for C12H7F2NO: 219.05.