Hydrochloric Acid → 2-[[4-Cyano-3-(trifluoromethyl)phenyl](2,2,2-trifluoroethyl)amino]ethyl methanesulfonate

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Reaction Steps

To a solution of 4-[(2-hydroxyethyl)(2,2,2-trifluoroethyl)amino]-2-(trifluoromethyl)benzonitrile (0.104 g, 0.333 mmol) in CH2Cl2 (3 mL) at 0° C. was added Et3N (0.07 mL, 0.5 mmol), followed by MsCl (0.03 mL, 0.37 mmol). The resulting mixture was stirred 12 h, gradually warming to rt. The mixture was poured into 10% v/v HCl and the layers were separated. The organic layer was washed (sat'd NaHCO3, water, brine), dried over Na2SO4, filtered and concentrated to a colorless film (0.122 g), which was used without further purification: 1H NMR (300 MHz, CDCl3) δ 7.71 (d, J=8.8 Hz, 1H), 7.12 (d, J=2.4 Hz, 1H), 6.99 (dd, J=8.7, 2.7 Hz, 1H), 4.43 (t, J=5.7 Hz, 2H), 4.10 (q, J=8.5 Hz, 2H), 3.95 (t, J=5.7 Hz, 2H), 3.02 (s, 3H).

Provenance & Evidence