Predesigned Covalent Organic Frameworks as Effective Platforms for Pd(II) Coordination Enabling Cross?Coupling Reactions under Sustainable Conditions

The phenanthroline unit in an imine-based covalent organic framework (Phen-COF) offers a robust coordination site for Pd(OAc)2 centers. Coordination of palladium centers is demonstrated by variety techniques, including X-ray photoelectron spectroscopy and total fluorescence. stable phenanthroline-Pd(II) avoids leaching metal to the reaction medium, where deactivation processes through nanoparticle formation limits catalytic activities observed homogeneous systems. Thus, because isolation immobilization sites Pd@Phen-COF performance material, outputs are dramatically increased with respect analogous molecular catalysts. This concept applied this work C?C cross-coupling reactions under mild environmentally benign conditions. found Suzuki-Miyaura Mizoroki-Heck allow thousands turnover numbers transformation wide scope precursors high degree recyclability. results reported contribute design greener protocols transformations that have crucial role industrial synthesis high-added value fine chemicals.