Hydrochloric Acid → HCID 66848138, compound

Participants

Reaction Steps

A mixture of ethyl 5-((2R,5S)-2-(5-fluoropyridin-3-yl)-5-(hydroxymethyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (0.250 g, 0.649 mmol) and 2M sodium hydroxide (3.24 mL, 6.48 mmol) in MeOH (10 mL) was stirred at ambient temperature for 4 days followed by 50° C. for 5 hours. The reaction was cooled to ambient temperature and 4M HCl in dioxane (1.78 mL, 7.14 mmol) was added. The mixture was concentrated and the residue was purified by reverse phase column chromatography (0-40% acetonitrile/water) to afford 5-((2R,5S)-2-(5-fluoropyridin-3-yl)-5-(hydroxymethyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (210 mg, 90% yield) as a white solid. MS (apci) m/z=358.0 (M+H).

Provenance & Evidence