Ethyl 3-cyclopropyl-3-methylbutanoate → 3-Cyclopropyl-3-methylbutan-1-ol
反応式
C([O:3][C:4](=O)[CH2:5][C:6]([CH:9]1[CH2:11][CH2:10]1)([CH3:8])[CH3:7])C.[H-].[H-].[H-].[H-].[Li+].[Al+3]>O1CCCC1>[CH:9]1([C:6]([CH3:8])([CH3:7])[CH2:5][CH2:4][OH:3])[CH2:11][CH2:10]1参加物
4
反応条件
- 温度
- 0 °C
実験手順
Step C To a solution of 3-cyclopropyl-3-methyl-butyric acid ethyl ester (2 g, 11.75 mmol) in anhydrous tetrahydrofuran (40 mL) at 0° C. was added a tetrhydrofuran solution (1 M) of LiAlH4 (23.5 mL, 23.5 mmol) under nitrogen. The reaction mixture was stirred at 0° C. for 1 h, then poured into a ice-water. The mixture was extracted with ethyl acetate. The organic layer were separated, washed with water, aqueous HCl solution, brine, dried over MgSO4, and concentrated. The residue was purified by chromatography (EtOAc:hexanes=1:10, 1:5) to give 3-cyclopropyl-3-methyl-butan-1-ol as a colorless oil (0.7 g, 46%).