[3-(5-Fluoro-pyridin-2-yl)-5-methyl-isoxazol-4-yl]-methanol → 3-(5-Fluoro-pyridin-2-yl)-5-methyl-isoxazole-4-carbaldehyde
反応式
[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[C:12]([CH2:13][OH:14])=[C:11]([CH3:15])[O:10][N:9]=2)=[N:6][CH:7]=1>C(Cl)Cl.[O-2].[Mn+4].[O-2]>[F:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[C:12]([CH:13]=[O:14])=[C:11]([CH3:15])[O:10][N:9]=2)=[N:6][CH:7]=1参加物
4
実験手順
To a solution of [3-(5-fluoro-pyridin-2-yl)-5-methyl-isoxazol-4-yl]-methanol (2.10 g, 10.1 mmol) in DCM (240 mL) was added manganese(IV) oxide (activated 85%, 20.63 g, 201 mmol) and the reaction mixture was stirred vigorously at room temperature for 3 days. The reaction mixture was filtered through dicalite and then fresh manganese(IV) oxide (activated 85%, 20.63 g, 201 mmol) was added and the reaction mixture stirred vigorously at room temperature for another 4 days. The reaction mixture was filtered through dicalite and evaporated. The combined DCM extracts were then dried over sodium sulfate, filtered and evaporated. Purification by chromatography (silica, 0 to 50% ethyl acetate in heptane) gave the title compound (845 mg, 40%) as a white solid. MS: m/e=207.0 [M+H]+.