Silica-supported PEI capped nanopalladium as potential catalyst in Suzuki, Heck and Sonogashira coupling reactions

We present the use of amine-functionalized silica (NH2-SiO2) as support for palladium nanoparticles (PdNPs) and the use of heterogeneous catalysts (Pd/NH2-SiO2) for the Suzuki, Heck and Sonogashira coupling reactions. The synthesized Pd catalyst is well characterized by XRD, HRTEM, BET, SEM-EDX, FT-IR, and UV–vis spectral techniques. It exhibits efficient catalytic activity for these coupling reactions without the assistance of ligand and copper salts.

Figure optionsDownload high-quality image (156 K)Download as PowerPoint slideHighlights
► We have developed branched polymer PEI capped PdNPs for the coupling reactions.
► The Pd/SiO2 gives high product yields and improved catalytic activity.
► Polyelectrolyte capped PdNPs is effective and stable catalytic system.
► It is a simple, convenient and novel method for the coupling reactions.