Trifluoroacetic acid → 1-[(1-Aminocyclopropyl)carbonyl]-5-(4-ethylphenyl)-N-phenylpiperidine-3-carboxamide

Participants

Reaction Steps

Under argon and at RT, 190 μl (2.5 mmol, 15 eq.) of trifluoroacetic acid were added to a solution of 81 mg (0.16 mmol) of tert-butyl (1-{[3-(4-ethylphenyl)-5-(phenylcarbamoyl)piperidin-1-yl]carbonyl}cyclopropyl)carbamate in 2 ml of dichloromethane. The reaction mixture was stirred at RT for 20 h, then concentrated under reduced pressure and repeatedly coevaporated with toluene. The crude product was purified by preparative HPLC (Reprosil C18, water/acetonitrile gradient). Yield: 29 mg (45% of theory)

Provenance & Evidence