反应 #2876075
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08633313B2
反应条件: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To a mixture of 3-(3-fluorophenyl)-3-oxopropanenitrile (0.8991 g, 5.511 mmol) and 3-amino-2-pyridinecarbaldehyde (0.6730 g, 5.511 mmol) in ethyl acetate (16.70 mL, 5.511 mmol) was added piperidine (0.04360 mL, 0.4409 mmol) and the mixture was heated under reflux (bath temp. 85° C.) with stirring. After 1 h, the mixture was cooled to room temperature and concentrated under reduced pressure to give a dark brown solid. The dark brown solid was purified by silica gel column chromatography on a 80 g of Redi-Sep™ column using 0 to 50% gradient of EtOAc in hexane over 25 min and then 50% isocratic of EtOAc in hexane for 25 min as eluent to give 2-(3-fluorophenyl)-1,5-naphthyridine-3-carbonitrile as a brown solid: 1H NMR (400 MHz, DMSO-d6) δ ppm 9.27 (1H, d, J=0.8 Hz), 9.18 (1H, dd, J=4.1, 1.8 Hz), 8.56-8.62 (1H, m), 8.01 (1H, dd, J=8.6, 3.9 Hz), 7.76-7.85 (2H, m), 7.63-7.71 (1H, m), 7.44-7.52 (1H, m); LC-MS (ESI) m/z 249.9 [M+H]+. the mixture was heated the mixture was cooled to room temperature concentrated under reduced pressure to give a dark brown solid The dark brown solid was purified by silica gel column chromatography on a 80 g of Redi-Sep™ column over 25 min
来源 ID: ord-913b5cf6918c4071bf9617b1c257bee9