Hydrogen Bromide → HCID 66885751, compound

Participants

Reaction Steps

The tetraacetate of step A (8.08 g, 14.4 mmol) was treated with 33% HBr in AcOH (30 ml) for 1 hour. The reaction was diluted with CH2Cl2 (60 ml), stirred for 30 minutes, diluted with more DCM, washed 3× with ice cold H2O and with sat. aq. NaHCO3 (with back extraction), dried over MgSO4, filtered, and concentrated under vacuum to give acetic acid (2S,3S,4R,5S,6S)-4,5-diacetoxy-2-bromo-6-[4-chloro-3-(4-ethoxy-benzyl)-phenyl]-tetrahydro-pyran-3-yl ester.

Provenance & Evidence