Diisobutylaluminum hydride → 2,2,6-Trimethyl-heptan-1-ol
反応式
C[O:2][C:3](=O)[C:4]([CH3:12])([CH3:11])[CH2:5][CH2:6][CH2:7][CH:8]([CH3:10])[CH3:9].CC(C[AlH]CC(C)C)C>C1(C)C=CC=CC=1>[CH3:11][C:4]([CH3:12])([CH2:5][CH2:6][CH2:7][CH:8]([CH3:9])[CH3:10])[CH2:3][OH:2]参加物
4
反応条件
- 温度
- -78 °C
実験手順
2,2,6-Trimethyl-heptanoic acid methyl ester (1.97 g, 10.6 mmol) was taken up in toluene (65 mL) and cooled to −78° C. DiBALH (12.7 mL of a 1 N solution in toluene) was added dropwise. After 45 min, 1.5 mL DiBALH was added. After 2 h, the reaction was quenched by the addition of 15 mL MeOH at −78° C. The mixture was warmed to ambient temperature, and then cooled again to −78° C. for the addition of 10 mL 1 N HCl. The mixture was extracted with EtOAc (3×15 mL). The combined organics were washed with brine, dried (MgSO4), filtered and concentrated. The residual oil was purified via silica gel chromatography (95/5 Hexane/EtOAc) to give 2,2,6-Trimethyl-heptan-1-ol (0.88 g). m/z 159 (M+).