Enhanced Durability and Recyclability of Copper(II) Catalysts in Chan–Evans–Lam Coupling Reactions

-0D counterparts lose structural integrity after the first cycle, thereby limiting their reusability. This is the first report comparing the catalytic performance of discrete and polymeric copper paddlewheel frameworks derived from the same ligand, providing a clear structure-activity relationship. Furthermore, the study highlights the potential of copper paddlewheel-based architectures as robust, recyclable, and scalable heterogeneous catalysts for sustainable CN bond formation.