Robust phosphine-based covalent-organic framework palladium catalysts for the highly efficient carbonylation coupling reaction

The first vinyl-linked PPh -based covalent-organic frameworks (Pd@TMBen-PPh and Pd@TMBen-4F-PPh ) were facilely constructed direct three-component Knoevenagel condensation, which could serve as outstanding heterogeneous catalysts for the Pd-catalyzed carbonylation coupling reaction owing to the synergistic effect of the flexible PPh -ligated Pd complexes and the rigid framework.