Water → 6-{5-amino-6-[(1-methyl-1H-imidazol-5-yl)ethynyl]-3-phenyl-2-pyrazinyl}-2-isopropyl-3(2H)-pyridazinone

Participants

Reaction Steps

In the presence of copper(I) iodide (3.7 mg) and dichlorobis(triphenylphosphine)palladium(II) (13.7 mg), triethylamine (0.0596 ml) was dropwise added to a mixture of 6-(5-amino-6-bromo-3-phenyl-2-pyrazinyl)-2-isopropyl-3(2H)-pyridazinone (150 mg) and 5-ethynyl-1-methyl-1H-imidazole (45.4 mg) in THF (1.5 ml) at 50° C. The mixture was refluxed for 2 hours. Water was added to the reaction mixture to give a solid. The solid was purified by column chromatography on silica gel eluting with a mixture of MeOH and EtOAc (2:98 v/v) to give 6-{5-amino-6-[(1-methyl-1H-imidazol-5-yl)ethynyl]-3-phenyl-2-pyrazinyl}-2-isopropyl-3(2H)-pyridazinone as a solid (135 mg).

Provenance & Evidence