反应详情

To a round bottomed flask was added 3-bromo-2-fluoropyridine (1.0376 g, 5.9 mmol), 2-methylpyridin-4-ylboronic acid (1.6154 g, 12 mmol), tris(dibenzylideneacetone)dipalladium(o) (0.5501 g, 0.59 mmol), 2-dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl (0.4846 g, 1.2 mmol), and sodium carbonate (0.74 mL, 18 mmol) in acetonitrile:water (5:1 ratio) at 85° C. to stir overnight. The reaction was monitored by LCMS. Upon completion, the solvents were evaporated. The crude product was adsorbed onto a plug of silica gel and chromatographed through a Biotage™ pre-packed silica gel column (40S), eluting with a gradient of 0.5% to 5% methanol in DCM, to provide 4-(2-fluoropyridin-3-yl)-2-methylpyridine. [M+1]=189.0.

1. customUpon completion, the solvents were evaporated
2. customchromatographed through a Biotage™ pre-packed silica gel column (40S)
3. washeluting with a gradient of 0.5% to 5% methanol in DCM