Benzyl chloroformate → HCID 67265298, compound

Participants

Reaction Steps

Dissolve 4-[1-(2-amino-ethyl)-4-(3-chloro-4-fluoro-phenyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester (0.94 mmol; 396.7 mg) in DCM (20 mL) and add DIPEA (1.41 mmol; 0.25 mL) and benzyl chloroformate (0.94 mmol; 0.14 mL). Stir 20 min and wash with saturated sodium bicarbonate, dry over MgSO4, filter and evaporate. Purify over 40 g silica gel with 0-40% EA/DCM to provide the title compound (222 mg; 42%). MS (ES): m/z=557 (M+H).

Provenance & Evidence