1-Hydroxybenzotriazole → HCID 44230805, compound

Participants

Reaction Conditions

Reaction Steps

HOBt (25 mg, 0.185 mmol) and DIPEA (22 mg, 0.175 mmol) were added to a stirred solution of N-biphenyl-4-yl-malonamic acid (50 mg, 0.175 mmol) in DMF (3 mL). The reaction mixture was cooled to 10° C. and EDCI.HCl (50 mg, 0.26 mmol) was added followed by the addition of (2,5-dichloro-phenyl)-piperazin-1-yl-methanone hydrochloride (55 mg, 0.187 mmol). The reaction mixture was stirred at room temperature overnight. Water was then added and the resulting precipitate was filtered and purified by column chromatography using silica gel 60-120 mesh and 50% ethyl acetate in hexane as eluant to afford 35 mg (41%) of N-biphenyl-4-yl-3-[4-(2,5-dichloro-benzoyl)-piperazin-1-yl]-3-oxo-propionamide. LCMS: 497.11 M+1)+, 95.5%. 1H NMR: (CDCl3): δ 9.6 (d, 1H), 7.64 (m, 2H), 7.58 (m, 4H), 7.44 (m, 3H), 7.38 (d, 2H), 7.32 (m, 2H), 3.95 (m, 2H), 3.8 (m, 1H), 3.75 (m, 4H), 3.65 (m, 1H), 3.52 (d, 3H), 3.34 (m, 3H).

Provenance & Evidence