A Pd NP-confined novel covalent organic polymer for catalytic applications

A novel unsymmetrical covalent organic polymer, COP ( 1 ), was designed and characterized using several analytical and spectroscopic techniques. COP ( 1 ) was synthesized via the nucleophilic substitution reaction of 2,4,6-trichloro-1,3,5-triazine with p -amino phenol. Subsequently, COP ( 1 ) was immobilized with Pd(0) on its exterior and utilized as a heterogeneous catalyst (Pd@ 1 ). Pd@ 1 exhibited excellent catalytic activity and reusability for the Sonogashira C-C cross coupling reaction, and a few new products were synthesized. The confinement of Pd was well supported by the suitable functionalities present on the surface of COP ( 1 ). Furthermore, Pd@ 1 was used for eight consecutive catalytic runs without any considerable loss in its activity and no leaching of the metal NPs was observed. A novel unsymmetrical covalent organic polymer was synthesized via nucleophilic substitution reaction of 2,4,6-trichloro-1,3,5-triazine with p -amino phenol.