Hydrochloric Acid → 2-{3-[1-(4-Trifluoromethyl-phenyl)-ethoxycarbonylmethyl]phenylsulfanylmethyl}-benzoic acid 2,2,2-trichloro-ethyl ester

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The titled compound was prepared according to the method described for 2-[3-(4-trifluoromethyl-benzyloxycarbonylmethyl)-phenylsulfanylmethyl]-benzoic acid 2,2,2-trichloro-ethyl ester above from 2-(3-carboxymethyl-phenylsulfanylmethyl)-benzoic acid 2,2,2-trichloro-ethyl ester (168 mg, 0.387 mmol), 1-(4-trifluoromethyl-phenyl)-ethanol (88 mg, 0.465 mmol), EDC×HCl (111 mg, 0.581 mmol), DMAP (4.7 mg, 0.039 mmol) and DCM (5 mL). The crude was submitted to flash chromatography using heptane and EtOAc (90/10) as eluent to yield the titled compound (157 mg, 67%) as an oil; 1H NMR (400 MHz, CDCl3): δ 1.52 (d, 3H), 3.59 (dd, 2H), 4.52 (s, 2H), 4.96 (s, 2H), 5.90 (m, 2H), 7.09-7.12 (m, 1H), 7.17-7.23 (m, 4H), 7.30-7.42 (m, 4H), 7.57 (d, 2H), 8.08 (d, 1H); Mass spectrum: M−H+ 604.

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