Water → HCID 66939511, compound

Participants

Reaction Steps

Under a nitrogen atmosphere at 0° C., to a solution (7 mL) of the compound (500 mg, 1.3 mmol) obtained in Example 89c in toluene was added diethylaminosulfur trifluoride (DAST) (650 mg, 4.0 mmol), and the mixture was stirred at room temperature overnight. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The resulting crude title compound was purified by column chromatography (hexane-hexane/ethyl acetate=50/50) to give the title compound (350 mg, 70%) as a colorless oil.

Provenance & Evidence