反应详情

To a solution of 4-cyclobutyl-2-methyl-5-(5-methyl-4H-1,2,4-triazol-3-yl)benzoic acid (compound 152.8, 260 mg, 0.95 mmol) in DMF (4 mL) were added 4-(piperidin-4-yl)benzonitrile hydrochloride salt (compound 1.5, 232 mg, 1.045 mmol), EDC (272 mg, 1.425 mmol), HOBt (39 mg, 0.285 mmol), and DIEA (367.7 mg, 2.85 mmol). The resulting mixture was stirred at room temperature for 16 hours. The mixture was quenched with saturated aqueous NaHCO3 (20 mL) and extracted with ethyl acetate (2×50 mL). The combined organic layers were washed with brine (50 mL), dried over Na2SO4, filtered, and concentrated in vacuo. Purification via SiO2 column chromatography (dichloromethane/methanol=95/5) afforded 4-(1-(4-cyclobutyl-2-methyl-5-(5-methyl-4H-1,2,4-triazol-3-yl)benzoyl)piperidin-4-yl)benzonitrile as a white solid (193 mg, 44% yield). m/z (ES+) 440 (M+H)+. 1H NMR (300 MHz, CD3OD): δ 7.69 (d, J=5.4 Hz. 2H), 7.56-7.30 (m, 4H), 1 proton obscured by methanol solvent peak, 4.10-3.98 (m, 1H), 3.64 (t, J=10.7 Hz, 1H), 3.33-3.21 (m, 1H), 3.00 (t, J=8.9 Hz, 2H), 2.58 (s, 3H), 2.48 and 2.38 (2 singlets, amide rotamers, ArCH3, 3H), 2.28-1.92 (m, 6H), 1.92-1.55 (m, 4H). 1H NMR (400 MHz, DMSO-d6): δ 13.66 (s, 1H), 7.77 (d, J=8.0 Hz, 2H), 7.62-7.34 (m, 4H), 4.78-4.63 (m, 1H), 4.31 (br s, 1H), 3.45 (br s, 1H), 3.15 (app t, J=12.3 Hz, 1H), 2.99-2.78 (m, 2H), 2.44-1.80 (m, 12H), 1.80-1.37 (m, 4H).

1. customThe mixture was quenched with saturated aqueous NaHCO3 (20 mL)
2. extractionextracted with ethyl acetate (2×50 mL)
3. washThe combined organic layers were washed with brine (50 mL)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customPurification via SiO2 column chromatography (dichloromethane/methanol=95/5)