反应详情

温度

90 °C

To a solution of methyl 4-cyano-2-hydroxy-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (3.50 g) in 1,4-dioxane (30.0 mL) were added 1-(4-(chloromethyl)phenyl)-1H-pyrazole (2.12 g), tripotassium phosphate trihydrate (5.90 g) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloromethane adduct (0.34 g), and the mixture was stirred at 90° C. for 16 hr under nitrogen atmosphere. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by flash silica gel column chromatography (ethyl acetate/petroleum ether) to give the title compound (0.86 g).

1. extractionthe mixture was extracted with ethyl acetate
2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
3. customthe solvent was evaporated under reduced pressure
4. customThe residue was purified by flash silica gel column chromatography (ethyl acetate/petroleum ether)