Copper-catalyzed oxygenation of 3-hydroxy-2-phenylquinolin-4(1H)-one: Synthesis, structure and spectral properties of [Cu(idpa)(N-baa)]ClO4, [idpa = 3,3′-iminobis(N,N-dimethylpropylamine), N-baaH = N-benzoylanthranilic acid]

The molecular structure of [Cu(idpa)(N-baa)]ClO4 (idpa = 3,3′-iminobis(N,N-dimethylpropylamine), N-baaH = N-benzoylanthranilic acid) was fully determined by IR, UV-vis, and X-ray crystal analysis. The oxygenation of 3-hydroxy-2-phenylquinolin-4(1H)-one (QuinH2) using [Cu(idpa)(N-baa)]ClO4 as a catalyst results in the oxidative cleavage of the heterocyclic ring to give a N-benzoylanthranilic acid and CO as a mimic of quercetinase and 3-hydroxy-1,4-dihydroquinolin-4-one 2,4-dioxygenase action.