3-Cyanobenzoic acid → HCID 86652725, compound

Participants

Reaction Steps

1-(3-Dimethylaminopropyl)-3-ethylcarboiimide hydrochloride (160 mg, 0.84 mmol) was added to a solution of O-(1-(4-(trifluoromethoxy)phenylsulfonyl)piperidin-4-yl)hydroxylamine (238 mg, 0.70 mmol), 1-hydroxybenzotriazole (114 mg, 0.84 mmol), 3-cyanobenzoic acid (103 mg, 0.70 mmol) and N,N-diisopropylethylamine (271 mg, 2.10 mmol) in N,N-dimethylformamide (6 ml). The reaction mixture was stirred at room temperature for 17 hours and quenched with H2O (10 ml) and aqueous 1 N HCl solution (pH=3). The aqueous phase was extracted with CH2Cl2 (20 ml×3) and the combined organic phase was washed with aqueous NaHCO3 solution and brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by column chromatography (ethyl acetate/hexane: 33/67) to give 3-cyano-N-(1-(4-(trifluoromethoxy)phenylsulfonyl)piperidin-4-yloxy)benzamide (118 mg, 36%) as a white solid: LCMS: 470 [M+1]+. 1H NMR (DMSO-d6) δ: 1.77 (s, 2H), 1.92 (s, 2H), 3.02 (s, 2H), 3.12 (s, 2H), 4.03 (s, 1H), 7.67 (m, 3H), 8.01 (m, 5H), 11.7 (s, 1H).

Provenance & Evidence