Trifluoroacetic acid → (4-Ethoxy-3-fluoro-phenyl)-piperidin-4-yl-methanone

Participants

Reaction Steps

To a solution of 4-(4-ethoxy-3-fluoro-benzoyl)-piperidine-1-carboxylic acid tert-butyl ester (0.95 g, 2.70 mmol) in 10 mL of DCM, was added 2 mL of TFA. The reaction mixture was stirred at ambient temperature for 2.5 hours, and then solvent was removed by reduced pressure to yield the title product (0.65 g, 2.46 mmol). MS (ESI) m/z 252.0 (M+H+); HPLC (Novapak 150×3.9 mm C-18 column: mobile phase: 35-90% acetonitrile/water with 0.1% TFA, at 2 mL/min over 2 min.) t 1.43 min.

Provenance & Evidence