Hydrochloric Acid → HCID 25167124, compound

Participants

Reaction Steps

DIPEA (330 mg, 0.44 mL, 2.6 mmol) was added drop wise to N-methyl-isophthalamic acid (145 mg, 0.8 mmol) in DMF (3 mL). EDCI (180 mg, 0.96 mmol) and HOBT (130 mg, 0.96 mmol) were added consecutively and, after 10 minutes, 2-Amino-1-[4-(2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethanone in its HCl salt form (281 mg, 0.8 mmol) was added. The resulting mixture was stirred at room temperature overnight. Cold water was then added and the product was extracted with EtOAc and the organic layer was washed with brine. The organic phase was dried over Na2SO4 and concentrated under reduced pressure to get the residue. The obtained residue was purified by column chromatography (using basic alumina and 10% MeOH in CHCl3 as eluent) to afford 35 mg (9.18% yield) of N-methyl-N′-{2-oxo-2-[4-(2-trifluoromethyl-benzoyl)-piperazin-1-yl]-ethyl}-isophthalamide. LCMS Purity: 97.7%. 1H NMR (CDCl3): δ 8.1 (bs, 1H), 7.9 (m, 2H), 7.7 (m, 1H), 7.5 (m, 3H), 7.4 (m, 2H), 6.3 (bs, 1H), 4.2 (m, 2H), 4.0 (m, 2H), 3.6 (m, 5H), 3.4 (m, 1H), 3.2 (m, 2H), 3.0 (d, 3H).

Provenance & Evidence