(2-{[(3,5-bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-phenyl)-cyclohexyl-methanone → 1-(2-(((3,5-bis(trifluoromethyl)benzyl)(2-methyl-2H-tetrazol-5-yl)amino)methyl)-4-(trifluoromethyl)phenyl)-1-cyclohexylethanol

Participants

Reaction Steps

To a solution of (2-{[(3,5-bis-trifluoromethyl-benzyl)-(2-methyl-2H-tetrazol-5-yl)-amino]-methyl}-4-trifluoromethyl-phenyl)-cyclohexyl-methanone (143 mg; 0.241 mmol) in tetrahydrofuran (2.5 mL) at 0° C. was added 3.0M methylmagnesium bromide in tetrahydrofuran (0.25 mL; 0.75 mmol). After 15 minutes, the bath was removed and reaction was stirred at room temperature for 3 hours. The reaction was quenched with 2 drops of water. The reaction was diluted with ethyl acetate and dried over sodium sulfate and concentrated under reduced pressure. The residue was purified over 12 g RediSep column (Teledyne Isco Inc., Lincoln Nebr.) (eluted with 10-50% ethyl acetate in heptane) to give 158 mg (108% yield) of a colorless oil. MS (ES+): Calc: 609.5, Found: 610.4 (M+H). 1H NMR (400 MHz, CDCl3) δ ppm 7.77 (s, 1H), 7.74 (s, 1H) 7.42 (m, 2H), 7.34 (d, J=8.30 Hz, 1H), 5.46 (d, J=16.18 Hz, 1H), 4.93 (d, J=16.60 Hz, 1H), 4.82 (q, J=16.18 Hz, 2H), 4.18 (s, 3H), 1.78-1.6 (m, 6H), 1.58 (s, 3H), 1.40 (m, 1H), 1.13-0.94 (m, 4H).

Provenance & Evidence