1,4-Dioxane hydrochloride → N-(3-methylpyridin-2-yl)-N-[(3R)-piperidin-3-yl]-4-(pyrazolo[1,5-a]pyrimidin-3-yl)benzamide hydrochloride

Participants

Reaction Steps

To a solution of the compound from Step 2 (R)-tert-butyl 3-(N-(3-methylpyridin-2-yl)-4-(pyrazolo[1,5-a]pyrimidin-3-yl)benzamido)piperidine-1-carboxylate (737 mg, 1.44 mmol) in 1,4-dioxane (10 mL) was added HCl/1,4-dioxane (7.2 mL of 4 M, 28.8 mmol) dropwise at 0° C. The reaction was stirred at room temperature for 3 h. The resulting mixture was concentrated under reduced pressure. The crude product was purified by preparatory HPLC to deliver the hydrochloride salt of the title compound (325 mg, 52%) as a yellow solid

Provenance & Evidence