In the presence of Pd NCs@COFs (5 mol% of Pd), the desired adduct was obtained in high conversion (100%, Table ). Chloro-and bromobenzene derivatives were used without and with other functional groups such as formyl (CHO), hydroxyl (O-H), and amine (NH2). Vinyl benzene (styrene) and vinyl ester (methyl acrylate) were tested. All aryl halide and vinyl derivatives exhibit high conversion (Table ), indicating the high catalytic performance of Pd NCs@COFs.