Preparation,characterization and application of silica‐supported palladium complex as a new and heterogeneous catalyst for Suzuki and Sonogashira reactions |
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| Authors: | Mehran Ghiaci Monireh Zarghani Farid Moeinpour Amir Khojastehnezhad |
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| Institution: | 1. Department of Chemistry, Isfahan University of Technology, Isfahan, Iran;2. Department of Chemistry, College of Science, Bandar Abbas Branch, Islamic Azad University, Bandar Abbas, Iran;3. Department of Chemistry, College of Science, Islamic Azad University, Mashhad Branch, Mashhad, Iran |
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| Abstract: | An efficient heterogeneous Pd catalytic system has been developed, based on immobilization of Pd nanoparticles (PNPs) on a silica‐bonded propylamine–cyanuric–cysteine (SiO2–pA–Cyan–Cys) substrate. The synthesized catalyst was characterized by transmission electron microscopy, scanning electron microscopy, FT‐IR, N2 adsorption analysis (BET), TGA and inductively coupled plasma/atomic emission spectroscopy, and catalytic activity of this catalyst was investigated in the Suzuki and Sonogashira cross‐coupling reactions. The catalysts showed excellent performance in these two reactions, including various aryl halide derivatives (except aryl chloride derivatives) with phenylboronic acid and phenylacetylene under green conditions. Moreover, the catalyst was recycled for several runs without any significant loss of catalytic activity. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | Pd nanoparticles silica‐bonded Suzuki Sonogashira cross‐coupling reactions |
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