1-Hydroxybenzotriazole → N-{2-[4-(2-chloro-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-6-phenylamino-nicotinamide

Participants

Reaction Steps

To a stirred solution of [(6-phenylamino-pyridine-3-carbonyl)-amino]-acetic acid (0.035 g, 0.00013 mol) in DMF (1 mL) was added DIPEA (0.05 g, 0.00039 mol), HOBt (0.0209 g, 0.00015 mol) and EDCI.HCl (0.029 g, 0.0001549 mol) at ambient temperature. After 2 minutes 4-(2-chloro-phenoxy)-piperidine hydrochloride (0.0382 g, 0.00015 mol) and the resulting mixture was stirred overnight. The reaction mixture was then diluted with cold water and the product was extracted with ethyl acetate. The ethyl acetate was washed with brine solution, dried over sodium sulfate and concentrated under reduced pressure. The resulting residue was purified by column chromatography using silica gel 60-120 mesh (70% ethyl acetate in hexane) to afford 0.037 g (62%) of N-{2-[4-(2-chloro-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-6-phenylamino-nicotinamide. LCMS: 465.16 (M+1)+, 96.6%, 1H NMR (DMSO-d6): δ 9.4 (s, 1H), 8.8 (s, 1H), 8.4 (t, 1H), 8.0 (dd, 1H), 7.7 (d, 2H), 7.45 (d, 1H), 7.4 (m, 4H), 7.0 (d, 2H), 6.8 (d, 1H), 4.7 (m, 1H), 4.25 (m, 2H), 3.7 (m, 2H), 3.5 (m, 2H), 2.0 (m, 2H), 1.7 (q, 2H).

Provenance & Evidence