Hydrochloric Acid → tert-Butyl 4-(4-((4-(2-(1-carbamoylcyclobutyl)phenethyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylate

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Reaction Steps

Ammonium carbonate (92 mg 0.96 mmol) was added to a suspension of 1-(2-(2-(2-((4-(1-(tert-butoxycarbonyl)piperidin-4-yl)phenyl)amino)-5-(trifluoromethyl)pyrimidin-4-yl)ethyl)phenyl)cyclobutanecarboxylic acid A56 (30 mg, 0.048 mmol), HOBt (32 mg, 0.24 mmol) and EDCl.HCl (46 mg, 0.24 mmol) in Et3N (0.2 mL) and DMF (10 mL) and the resulting mixture was stirred at 40° C. overnight. The volatiles were removed in vacuo and the resulting residue was dissolved in DCM (50 mL), washed with water (50 mL), separated and adsorbed onto silica gel. Purification by column chromatography (Biotage Isolera, 12 g SiO2 cartridge, 0-100% EtOAc in peteroleum benzine 40-60° C.) gave the title compound A57 as a yellow solid (6 mg, 20%). LCMS-A: rt 8.604 min; m/z 624.3 [M+H]+.

Provenance & Evidence