Acetic Acid → HCID 66853015, compound

Participants

Reaction Steps

To a mixture of ethyl 5-((2R,4R)-2-(3-fluorophenyl)-4-hydroxypyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (Example 41, Step E, 260 mg, 0.702 mmol) and PPh3 (460 mg, 1.75 mmol) in THF (10.0 mL) was added DIAD (276 μL, 1.40 mmol) followed by acetic acid (80.4 μL, 1.40 mmol). The reaction was stirred at ambient temperature for 48 hours and then concentrated. The residue was purified by reverse phase column chromatography (0-70% acetonitrile/water) to afford ethyl 5-((2R,4S)-4-acetoxy-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (228 mg, 79% yield). MS (apci) m/z=413.0 (M+H).

Provenance & Evidence