反应详情

Hydrogen fluoride-pyridine (220 L) was added to a solution of bis-TBDMS ether 7 (70 mg, 0.11 mmol) in CH3CN (2.0 mL) at 0° C. The reaction was warmed to room temperature, stirred 1 h, and recooled to 0° C. The reaction was quenched with saturated aqueous NaHCO3 until gas evolution ceased. The mixture was extracted with CH2Cl2 (4×). The combined organics were washed with brine, dried (Na2SO4), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography (silica gel, 100% CH2Cl2 followed by 30:1 CH2Cl2:MeOH) provided 40 mg (90%) of the above titled compound.

1. customrecooled to 0° C
2. customThe reaction was quenched with saturated aqueous NaHCO3 until gas evolution
3. extractionThe mixture was extracted with CH2Cl2 (4×)
4. washThe combined organics were washed with brine
5. dry with materialdried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. customPurification of the residue by flash column chromatography (silica gel, 100% CH2Cl2 followed by 30:1 CH2Cl2:MeOH)