反应详情

To a solution of alcohol 187 (1.73 g, 3.46 mmol) in THF (28 mL) was added TBAF (1 M in THF, 7.0 mL, 6.92 mmol) at 0° C. The mixture was stirred for 1 hr at rt. The mixture was extracted with EtOAc/aq. sat'd NH4Cl solution (500 mL/50 mL). The organic layer was washed with brine, dried over MgSO4, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography to provide the product 188 (1.19 g, 89%).

1. extractionThe mixture was extracted with EtOAc/aq
2. washThe organic layer was washed with brine
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe residue was purified by silica gel column chromatography