反应详情

Ester (a) (0.95 g, 4.29 mmol) was added portionwise to a cold solution (0° C.) of lithium aluminium hydride (0.206 g, 4.7 mmol) in tetrahydrofuran (20 ml). The mixture was then stirred 1.5 hours at room temperature and cooled again. The excess of hydride was hydrolysed by careful addition of water (0.2 ml), 5N aqueous sodium hydroxide solution (0.2 ml) and finally water (0.6 ml). Magnesium sulfate was added and the mixture was filtered. The filtrate was concentrated to dryness to give the product (0.5 g, 65%).

1. temperaturecooled again
2. filtrationthe mixture was filtered
3. concentrationThe filtrate was concentrated to dryness