Hydrochloric Acid → HCID 68538023, compound

Participants

Reaction Steps

Treat a solution of 4-{4-[3-(5-tert-butyl-2-p-tolyl-2H-pyrazol-3-yl)-ureido]-pyridin-2-yloxy}-piperidine-1-carboxylic acid tert-butyl ester (877 mg, 1.6 mmol) in 1:1 EtOAc:DCM (100 mL) with a bubbling stream of HCl (g) for 3 min. Allow the resulting mixture to stand for 30 min, then concentrate under reduced pressure. Dissolve the residue in MeOH and load onto a 20 g Varian SCX column, rinsing well with MeOH. Elute the free base with 1:1 DCM:2 M ammonia in MeOH. Concentrate the solution under reduced pressure to give the title compound in quantitative yield. LCMS ES+(m/z) 449 [M+H].

Provenance & Evidence