Potassium Carbonate → 1-(cyclopropylmethyl)-5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4(1H)-one

Participants

Reaction Steps

3-Chloro-1-(cyclopropylmethyl)-5-methoxypyridazin-4(1H)-one (0.133 g), 1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.200 g), potassium carbonate (0.171 g) and bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (0.0219 g) were suspended in toluene (3.09 mL) and water (0.309 mL), and the suspension was heated under reflux for 20 hr under an argon atmosphere. The reaction mixture was cooled to room temperature, diluted with water, saturated aqueous sodium hydrogen carbonate solution and saturated brine, extracted with ethyl acetate, dried over anhydrous sodium sulfate, filtered, concentrated, purified by NH silica gel column chromatography (ethyl acetate/hexane→methanol/ethyl acetate) and recrystallized from ethyl acetate/hexane to give the title compound (0.119 g).

Provenance & Evidence