Hydrochloric Acid → HCID 66549041, compound

Participants

Reaction Steps

To a stirred solution of 3-fluoro-3-{4-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-phenyl}-cyclobutanecarboxylic acid (Preparation 7, 0.1 g, 0.200 mmol) in DMF (3 mL) was added HOBt (0.026 g, 0.200 mmol), DIPEA (0.050 g, 0.392 mmol) followed by addition of EDCl.HCl (0.056 g, 0.294 mmol, 1.5 eq.) and 2,2,2-trifluoro-ethylamine hydrochloride (0.026 g, 0.200 mmol) at room temperature. Resulting reaction mixture was stirred at room temperature for 18 hours under nitrogen atmosphere. After complete consumption of starting material, reaction mixture was quenched with water (50 mL) and extracted with EtOAc (3×20 mL). Combined organic layer was washed with water (5×30 mL), brine (50 mL), saturated NaHCO3 (50 mL), dried over sodium sulphate and evaporated in vacuo to get crude. Crude was purified by column chromatography on silica gel (100-200 mesh size). Compound was eluted using 1% methanol in DCM to afford sticky mass, which was crystallized with pentane to afford white solid (0.065 g, 56%). 1H-NMR (400 MHz, CDCl3) δ: 2.77-2.83 (m, 3H), 2.96-3.08 (m, 2H), 3.68 (d, 1H, J=17.2 Hz), 3.92-4.00 (m, 2H), 4.08 (d, 1H, J=17.2 Hz), 5.70 (t, 1H, J=6.3 Hz), 7.52 (d, 2H, J=8.2 Hz), 7.64 (s, 2H), 7.70 (d, 2H, J=8.12 Hz); LC-MS (m/z): [M−H] 588.60.

Provenance & Evidence