Synthesis and Characterization of Modified Merrifield Resin-Supported PCP Pincer Palladium Nanoparticles as a New Polymeric Catalyst for Suzuki Coupling Reactions

The immobilization of homogeneous catalysts on polymeric supports, offer the advantages of simple filtration, catalyst recovery, recycling, and inhibiting metal losing especially forexpensive transition metals such as palladium [1]. Palladated pincer complexes are known to be excellentprecatalyst for the C-C coupling reactions such as Suzukireactions [2]. Several excellent reviews on palladium pincer complexes have been published [3].Phosphines and phosphinites are among the most important phosphorous-based ligands in organometallic chemistry. These ligands and their metal complexes anchoredon polymeric supports or silica gel have been used in many catalytic reactions [4]. Phosphinite POCOP pincer compoundshave been an answer for the easy synthesis of pincer compounds, maintaining the same characteristics of thermal robustness and in many occasions enhanced reactivity whencompared to their phosphine counterparts. In Continuation of our studies on the use of supported Pdcatalyst [5], we report here the synthesis and characterization of PCP pincer palladium complex having phosphinito groups as catalyst in Suzuki coupling reactions