反应详情

温度

0 °C

To a solution of the ester obtained in step 1 (37.1 g) in toluene (310 ml) at 0° C. was added dropwise diisobutylaluminum hydride (1.2M in toluene, 317 ml) and the solution was stirred at 0° C. for 1 h. Water (47.6 ml) was carefully added at 0° C. followed by sodium hydroxide 2M (47.6 ml) and finally water (95.1 ml). The mixture was allowed to stir at room temperature for 1 h. After filtration, the solution was washed with hydrochloric acid 2N, water and brine, dried over sodium sulfate and concentrated in vacuo to give 29.5 g of the desired alcohol as a solid (96%) which was characterized by its mass and NMR spectra.

1. stirringto stir at room temperature for 1 h
2. filtrationAfter filtration
3. washthe solution was washed with hydrochloric acid 2N, water and brine
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated in vacuo