Uracil → HCID 70466634, compound

Participants

Reaction Steps

A mixture of 3-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-D-arabinofuranosyl bromide (11.5 g) and 2,4-bis(trimethylsilyloxy)pyrimidine [prepared by refluxing a mixture of 5 g of uracil and 5-15 mg of ammonium sulfate in 25 ml of hexa-methyldisilazane until a clear solution is obtained followed by removal of the excess hexamethyldisilazane in vacuo] in 150 ml of methylene chloride is stirred for 5 days at room temperature. Methanol (5 ml) is added to the mixture and the suspension is filtered through a celite pad. The filtrate is evaporated in vacuo and the residue is triturated with diethyl ether to give a crude product which was recrystallized from ethanol to give pure 1-(3-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)uracil, 5.8 g, m.p. 179°-180°.

Provenance & Evidence