反应详情

温度

130 °C

A mixture of (6-bromo-[1,2,4]triazolo[4,3-a]pyridin-3-yl)(4-(5-chloro-2-(trifluoromethyl)phenyl)piperidin-1-yl)methanone (0.205 g, 0.42 mmol), zinc cyanide (0.099 g, 0.840 mmol), tetrakis(triphenylphosphine)palladium (0.048 g, 0.042 mmol), and DMF (4 mL) was heated under microwave irradiation at 130° C. for 30 min. After cooling to ambient temperature, the mixture was diluted with water (80 mL) and extracted with ethyl acetate (80 mL). The extract was washed with brine (2×80 mL), dried (Na2SO4), filtered, and concentrated under reduced pressure. The resulting residue was chromatographed over silica gel (0-60% EtOAc in hexanes) to give 3-(4-(5-chloro-2-(trifluoromethyl)phenyl)piperidine-1-carbonyl)-[1,2,4]triazolo[4,3-a]pyridine-6-carbonitrile as a white solid (0.115 g, 63%): 1H NMR (300 MHz, CDCl3) δ 9.72 (s, 1H), 7.98 (dd, J=9.5, 1.1 Hz, 1H), 7.60 (d, J=8.5 Hz, 1H), 7.51 (dd, J=9.5, 1.6 Hz, 1H), 7.41 (s, 1H), 7.31 (dd, J=8.5, 1.3 Hz, 1H), 5.77-5.72 (m, 1H), 5.02-4.96 (m, 1H), 3.40 (m, 2H), 3.04-2.94 (m, 1H), 2.06-1.80 (m, 4H); MS (ESI+) m/z 434 [M+H]+.

1. temperatureAfter cooling to ambient temperature
2. extractionextracted with ethyl acetate (80 mL)
3. washThe extract was washed with brine (2×80 mL)
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe resulting residue was chromatographed over silica gel (0-60% EtOAc in hexanes)