反应详情

To a solution of 1-(2-(((3,5-bis(trifluoromethyl)benzyl)(2-methyl-2H-tetrazol-5-yl)amino)methyl)-4-(trifluoromethyl)phenyl)-1-cyclohexylethanol (26 mg; 0.043 mmol) in tetrahydrofuran (0.7 mL) was added sodium hydride (11 mg; 0.275 mmol; 60% dispersion in mineral oil). After stirring for 30 minutes at room temperature, iodomethane (30 uL; 0.485 mmol) was added. The reaction was stirred for 16 hours. More sodium hydride (12 mg; 0.3 mmol; 60% dispersion in mineral oil) and iodomethane (30 uL; 0.485 mmol) were added. After 1 hour more sodium hydride (12 mg; 0.3 mmol; 60% dispersion in mineral oil) was added. After 30 minutes, iodomethane (30 uL; 0.485 mmol) was added. The reaction was stirred for 2 hours. The reaction was quenched with aqueous 2N hydrochloric acid (6 drops). The mixture was diluted with ethyl acetate and filtered over sodium sulfate/silica plug. Then the solution was concentrated. The residue was purified by 4 g RediSep column (Teledyne Isco Inc., Lincoln Nebr.) (eluted with 5-25% ethyl acetate in heptane) to give 19 mg (71% yield) of a colorless gum. MS (ES+): Calc: 623.5, Found: 592.5 (M-OCH3). 1H NMR (400 MHz, CDCl3) δ ppm 7.78 (s, 1H), 7.73 (s, 2H), 7.46 (s, 1H), 7.45 (d, J=7.47 Hz, 1H), 7.27 (d, J=8.30 Hz, 1H), 5.25 (d, J=17.43 Hz, 1H), 5.07 (d, J=17.43 Hz, 1H), 4.79 (q, J=16.60, 16.18 Hz, 2H), 4.19 (s, 3H), 3.02 (s, 3H), 2.01 (d, J=11.2 Hz, 1H), 1.78-1.67 (m, 2H), 1.66-1.55 (m, 2H), 1.53 (s, 3H), 1.11-0.83 (m, 6H).

1. stirringThe reaction was stirred for 16 hours
2. waitAfter 30 minutes
3. stirringThe reaction was stirred for 2 hours
4. customThe reaction was quenched with aqueous 2N hydrochloric acid (6 drops)
5. additionThe mixture was diluted with ethyl acetate
6. filtrationfiltered over sodium sulfate/silica plug
7. concentrationThen the solution was concentrated
8. customThe residue was purified by 4 g RediSep column (Teledyne Isco Inc., Lincoln Nebr.) (eluted with 5-25% ethyl acetate in heptane)