1-Phenyl-5-pyridin-2-ylpyridin-2-one

It serves as a precursor to which a 2-cyanophenyl group is added, usually via bromination followed by Suzuki-Miyaura coupling, to form the final structure, 2-(2-oxo-1-phenyl-5-pyridin-2-yl-1,2-dihydropyridin-3-yl)benzonitrile. 1-Phenyl-5-(pyridin-2-yl)-2(1H)-pyridone is a critical intermediate in the synthesis of the antiepileptic drug Perampanel.