1-[4-Methyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethanone → 2-[4-Methyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-propan-2-ol
反応式
[CH3:1][C:2]1[N:3]=[C:4]([C:10]2[CH:15]=[CH:14][C:13]([C:16]([F:19])([F:18])[F:17])=[CH:12][CH:11]=2)[O:5][C:6]=1[C:7](=[O:9])[CH3:8].[CH3:20][Mg]Br>O1CCCC1>[CH3:1][C:2]1[N:3]=[C:4]([C:10]2[CH:15]=[CH:14][C:13]([C:16]([F:19])([F:18])[F:17])=[CH:12][CH:11]=2)[O:5][C:6]=1[C:7]([OH:9])([CH3:20])[CH3:8]参加物
4
実験手順
1-[4-Methyl-2-(4-trifluoromethyl-phenyl)-oxazol-5-yl]-ethanone (0.58 g, 2.15 mmol) is stirred in tetrahydrofuran (25 mL) at zero deg. C. Methyl magnesium bromide (1.1 mL, 3.23 mmol, 3 M in ether) is added and the reaction stirred at room temperature 2 hr. The mixture is cooled on ice/water and quenched with saturated ammonium chloride (5 mL). The product is extracted with ethyl acetate (3×50 mL), dried over anhydrous magnesium sulfate, filtered and concentrated to afford the product as a tan solid, 0.40 g, 65%). MS M++1 286. The structure is confirmed by 1H NMR spectroscopy.