Covalent organic framework‐supported Pd nanoparticles: An efficient and reusable heterogeneous catalyst for Suzuki–Miyaura coupling reactions

A Schiff base hollow covalent organic framework (COF) was used for anchoring Pd(II) to synthesize the Pd@COF‐TB nanocatalyst. Then, the as‐synthesized Pd@COF‐TB catalyst has been meticulously characterized using several methods. Thereafter, the catalytic performance of the Pd@COF‐TB species regarding Suzuki–Miyaura coupling reactions was examined, and the corresponding products were obtained with good to excellent yields. Besides, the Pd@COF‐TB catalyst could be recovered conveniently and reused at least eight times without obvious decrease in activity and selectivity. More importantly, the leaching of Pd during the reaction process could be negligible, which is crucially important when preparing bioactive species.