Nonanoic acid, 9-bromo-2,2-dimethyl-, ethyl ester → 9-Bromo-2,2-dimethylnonan-1-ol
反応式
[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][C:9]([CH3:16])([CH3:15])[C:10](OCC)=[O:11].[H-].C([Al+]CC(C)C)C(C)C>C(OCC)C>[Br:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][C:9]([CH3:16])([CH3:15])[CH2:10][OH:11]参加物
4
反応条件
- 温度
- 0 °C
実験手順
To a solution of ethyl 9-bromo-2,2-dimethylnonanoate (example 103, step a) (1.27 g) in dry diethyl ether (40 mL) at 0° C. under N2 was added diisobutylaluminium hydride (1M in toluene, 9.5 mL) dropwise. The reaction mixture was stirred at 0° C. for 1.25 h then quenched by addition of saturated potassium sodium tartrate solution (150 mL). The mixture was stirred for 15 min then extracted with ethyl acetate (×3) then the combined organics were washed with brine, dried over sodium sulphate, filtered and evaporated in vacuo. Purification was by silica gel chromatography eluting with 0-25% ethyl acetate in cyclohexane to give the subtitled compound as a colourless liquid. Yield 0.56 g.