Hydrochloric Acid → (R)-8-bromo-3,7-dimethyl-1-(5-hydroxyhexyl)xanthine

Participants

Reaction Steps

To a solution of (R)-1-(5-acetoxyhexyl)-8-bromo-3,7-dimethylxanthine (5.88 g, 14.7 mmol) in methanol (200 ml) was added a solution of hydrogen chloride in ether (1.0 M, 20 ml). The reaction mixture was stirred at room temperature for 24 hours. Evaporation of the solvent under reduced pressure provided (R)-8-bromo-3,7-dimethyl-1-(5-hydroxyhexyl)xanthine (4.8 g, 91% yield) as a white solid.

Provenance & Evidence