反应详情

温度

90 °C

5-Bromo-6-(1-methyl-1H-imidazol-2-ylmethoxy)-nicotinic acid methyl ester (0.35 g, 1.1 mmol) was dissolved in toluene (6 mL). To this solution was added (4-chloro-phenyl)-boronic acid (0.17 g, 1.1 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloro-methane complex (43 mg), and 2 N sodium carbonate solution (2 mL). The whole mixture was heated with stirring at 90° C. for 18 h, cooled to room temperature and eluted with ethyl acetate over 10 g ChemElut (Varian). The solvent was evaporated and the residue was purified by column chromatography on silica (n-heptane/ethyl acetate gradient) to yield 0.29 g of the title compound as an off-white solid, MS (ISP) 358.1 (M+H)+.

1. temperatureThe whole mixture was heated
2. temperaturecooled to room temperature
3. washeluted with ethyl acetate over 10 g ChemElut (Varian)
4. customThe solvent was evaporated
5. customthe residue was purified by column chromatography on silica (n-heptane/ethyl acetate gradient)