Sodium hydride → 4-{[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentyl]oxy}-6-chloropyrimidine

Participants

Reaction Conditions

Reaction Steps

To a suspension of sodium hydride (75.6 mg, 0.00189 mol) in THF (2 mL) at 0° C. under an atmosphere of nitrogen was added (1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]oxy}methyl)cyclopentanol (0.60 g, 0.0017 mol) in 1.5 mL THF dropwise at 0° C. The mixture was stirred at 0° C. for 10 min. To this was next added 4,6-dichloro-pyrimidine (0.225 g, 0.00151 mol) in 2 mL THF at 0° C. The suspension was stirred at 0° C. for 2 hrs. The reaction was quenched with 9 mL saturated aqueous NH4Cl and extracted with t-BuOMe (3×). The organic layers were combined and washed with brine, dried over anhydrous MgSO4 and then concentrated to give 0.804 g of an oil. The residue was purified by flash chromatography (0 to 10% EtOAc/hexanes) to give 0.63 g (80%) of the title compound.

Provenance & Evidence