Hydrochloric Acid → 5-cyclopropyl-2-fluoro-N-(methylsulfonyl)-4-((1-(trifluoromethyl)-cyclohexyl)methoxy)benzamide

Participants

Reaction Steps

To a stirred solution of 5-cyclopropyl-2-fluoro-4-((1-(trifluoromethyl)-cyclohexyl)methoxy)benzoic acid (0.36 g, 1.00 mmol) in dichloromethane (20 mL) were added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.29 g, 1.50 mmol) and 4-dimethylaminopyridine (0.28 g, 2.30 mmol). The reaction was stirred at ambient temperature for 10 minutes, methanesulfonamide (0.15 g, 1.56 mmol) was added and the stirring was continued at ambient temperature for 17 hours. 5% aqueous hydrochloric acid solution (10 mL) were added and diluted with ethyl acetate (100 mL), washed with water and brine; dried over anhydrous sodium sulfate and concentrated in vacuo. Purification of the residue by column chromatography (30% ethyl acetate in hexanes) afforded the title compound (0.27 g, 62%) as a colorless solid: 1H NMR (300 MHz, CDCl3) δ 8.70 (br s, 1H), 7.59 (d, J=9.0 Hz, 1H), 6.59 (d, J=14.1 Hz, 1H), 4.12 (s, 2H), 3.39 (s, 3H), 2.03-1.88 (m, 3H), 1.76-1.63 (m, 5H), 1.48-1.23 (m, 3H), 0.94-0.87 (m, 2H), 0.64-0.58 (m, 2H); MS (ES−) m/z 436.2 (M−1).

Provenance & Evidence