Palladium Nanoparticles Supported on Nitrogen‐rich Containing Melamine‐based Microporous Covalent Triazine Polymers as Efficient Heterogeneous Catalyst for C−Se Coupling Reactions

Abstract In the present work, microporous nitrogen containing covalent triazine polymers (CTPs) TATAM was synthesized from condensation of 4,4′4′′‐(1,3,5‐triazine‐2,4,6‐triyl) tribenzaldehyde (TATA) and melamine under solvothermal conditions to obtain nitrogen‐ rich triazine containing polymeric supported materials (TATAM). Further, palladium nanoparticles (Pd NPs) were supported on TATAM polymeric networks (Pd@TATAM). The synthesized Pd@TATAM CTPs material was thoroughly characterized by FT‐IR, UV‐DRS, solid state 13 C‐CPMAS, XPS, powder X‐ray diffraction, TGA, SEM, TEM. In addition, the characterized Pd@TATAM CTPs were applied to check the catalytic application. The Pd@TATAM was shown to be an efficient and reusable heterogeneous solid catalyst for the formation of C−Se bond through coupling of aryl halide and elemental selenium, dimethyl sulfoxide as a solvent at 100 °C for about 6 h. Besides the absence of metal leaching for catalytic system, it is also observed that the catalyst can be reused for three consecutive cycles with a minimal decrease in its activity.