反应详情

LAH (lithium aluminum hydride, 1.10 g, 29.0 mmol) was suspended in ether (50 ml), and the slurry was kept at 0° C. Thereto was slowly added dropwise a solution of 8-methylnonanoic acid ethyl ester (5.81 g, 29.0 mmol) in ether (20 ml). After the completion of the dropwise addition, the slurry was stirred at room temperature for 2 hr and 10% aqueous potassium hydrogen sulfate solution (50 ml) was slowly added to the reaction mixture. Ether (100 ml) was further added, and the aqueous layer was separated from the organic layer. The organic layer was washed with saturated brine (50 ml), and dried over anhydrous magnesium sulfate. Magnesium sulfate was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was distilled under reduced pressure (60 to 65° C./2 mmHg) to give 8-methyl-1-nonanol (4.27 g, 27.0 mmol) as a colorless oil.

1. customwas kept at 0° C
2. additionAfter the completion of the dropwise addition
3. customthe aqueous layer was separated from the organic layer
4. washThe organic layer was washed with saturated brine (50 ml)
5. dry with materialdried over anhydrous magnesium sulfate
6. filtrationMagnesium sulfate was filtered off
7. concentrationthe filtrate was concentrated under reduced pressure
8. distillationThe obtained residue was distilled under reduced pressure (60 to 65° C./2 mmHg)