Potassium Phosphate, Tribasic → 2-[4-chloro-3-(4-fluorophenyl)-5-phenyl-pyrazolo[3,4-c]pyridazin-1-yl]-1-[(3R)-3-fluoropyrrolidin-1-yl]ethanone

Participants

Reaction Steps

Nitrogen was bubbled through a suspension of 2-(4-chloro-3-iodo-5-phenyl-pyrazolo[3,4-c]pyridazin-1-yl)-1-[(3R)-3-fluoropyrrolidin-1-yl]ethanone (70 mg, 0.144 mmol), 4-fluorophenylboronic acid (22 mg, 0.158 mmol) and K3PO4 (92 mg, 0.43 mmol) in DMF (1.1 mL) and water (0.4 mL) for 20 min. 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (12 mg, 0.014 mmol) was added and the tube sealed and heated using microwave irradiation to 60° C. for 30 min. The crude reaction mixture was filtered and partially purified by preparative HPLC. The residue was purified by chromatography (silica gel, isohexane/ethyl acetate 1:0 to 7:3) to provide Compound 1 (20 mg).

Provenance & Evidence