Water → HCID 57942309, compound

Participants

Reaction Steps

A mixture of 4-chloro-N-[2-(2-chloro-benzoyl)-5-methyl-pyridin-3-yl]-N-methoxymethyl-3-trifluoromethyl-benzenesulfonamide (260 mg, 0.49 mmol) in 4M HCl in dioxane (5 mL) and water (1 mL) was refluxed for 3 h. Reaction mixture was cooled to room temperature, evaporated to dryness and treated with saturated aqueous NaHCO3 solution till pH 7-8. The mixture was extracted with EtOAc (2×25 mL), dried (anhydrous Na2SO4) and concentrated. The obtained residue was purified by flash chromatography (SiO2, 70% EtOAc-hexanes) to afford 4-chloro-N-[2-(2-chloro-benzoyl)-5-methyl-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamide (106 mg) as a white solid (after lyophilization) in 45% yield. ESMS m/z (relative intensity): 489 (M+H)+ (100).

Provenance & Evidence