“…The metal-catalyzed oxidative cross-coupling reaction is a powerful method for preparing new carbon–carbon bonds from two unfunctionalized carbon–hydrogen bonds. − Inspired by the mode of action of metalloenzymes that assemble phenolic oligomeric and polymeric structures from simple phenolic units, iron complexes , that promote oxidative cross-coupling between phenols and π-nucleophiles have been developed . These π-nucleophiles include arenes, phenols, − , anilines, , and polyaromatic hydrocarbons, , as well as enolizable β-ketoesters, α-substituted-β-ketoesters, 1,3-diketones, and 2′-hydroxyacetophenones . The products of these reactions are widely applicable in various fields, serve as ligands in asymmetric catalysis, and are key intermediates in natural product syntheses. , 3-Substituted oxindoles are highly nucleophilic compounds that have been used as coupling partners in C–H activation reactions .…”