反应详情

To a solution of (1S)-1-[(3aR,5S,6aR)-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]-2-methoxy-ethanol (compound 21b, 1.62 g, 7.4 mmol) in DCM (50 mL) was added Dess-Martine periodinane (4.7 g, 11 mmol) with stirring. After being stirred at room temperature for 2 hours, the resulting solution was filtered and the filtrate was concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluting with 1:2 EtOAc in petroleum ether) to afford 1.4 g of 1-[(3aR,5S,6aR)-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]-2-methoxy-ethanone (compound 21c) as a colorless oil. MS obsd. (ESI+) [(M+NH4)+]: 234.

1. stirringAfter being stirred at room temperature for 2 hours
2. filtrationthe resulting solution was filtered
3. concentrationthe filtrate was concentrated in vacuo
4. customThe residue was purified by column chromatography on silica gel (eluting with 1:2 EtOAc in petroleum ether)