Diisobutylaluminum hydride → (4-(Trifluoromethyl)-1,3-thiazol-2-yl)methanol
反応式
C([O:3][C:4]([C:6]1[S:7][CH:8]=[C:9]([C:11]([F:14])([F:13])[F:12])[N:10]=1)=O)C.CC(C[AlH]CC(C)C)C>C1COCC1>[F:14][C:11]([F:12])([F:13])[C:9]1[N:10]=[C:6]([CH2:4][OH:3])[S:7][CH:8]=1参加物
4
反応条件
- 温度
- -78 °C
実験手順
4-Trifluoromethyl-thiazole-2-carboxylic acid ethyl ester (131 mg) was dissolved in THF (5 ml). The reaction mixture was then cooled to −78° C. DIBAL-H (4.7 ml, 1.0 M in tetrahydrofurane) was added slowly during a period of 10 min. The cooling bath was removed, and the solution was kept under stirring for 30 min at RT. The solution was then cooled to 0° C., and NaF (784 mg) was added, followed by the slow addition of 3 ml water. The product was extracted by ethyl acetate. The solvent was removed, and the crude product was used in alkylation reactions without further purification.