Immobilized copper iodide on a porous organic polymer bearing P,N-ligation sites: A highly efficient heterogeneous catalyst for C[sbnd]O bond formation reaction

Abstract

Immobilized copper iodide on a triazine-phosphite porous organic polymer (CuI-TP-POP) was introduced as a novel heterogeneous catalyst, to be used in CO band formation reaction. The CuI-TP-POP catalyst was synthesized by complexation of CuI with a triazine-phosphite porous organic polymer (TP-POP), incorporating P,N-ligation sites. The TP-POP substrate is a porous material in sheet morphology with cavities in the range of nanometer scale incorporating P and N atoms. These nano-cavities create appropriate ligation sites on the surface of TP-POP with chelation character to coordinate with CuI, leading to the formation of a heterogeneous copper (I) catalyst. The CuI-TP-POP was found to be an efficient heterogeneous catalyst in CO bond formation reaction between phenolic compounds and aryl halides toward synthesis of diaryl ethers in high isolated yields. This catalyst system was reusable at least for five times without significant decreasing in its catalytic activity.