Application of Fe3O4@HPG/Pd0 NPs as an Innovative Semi-heterogeneous Catalyst in Suzuki Cross-coupling Reaction
Publish place: 27th Iranian Seminar on Organic Chemistry
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISOC27_137
تاریخ نمایه سازی: 19 اسفند 1399
Abstract:
Interest in catalysis by palladium nanoparticles is increasing dramatically due to the advantages offered by these “semi-heterogeneous catalysts” [1]. These advantages combine the characteristics of heterogeneous catalysis (recovery and recyclability) with those of homogeneous catalysis (relatively low catalyst loadings and good selectivity) [2]. Since the heterogeneous catalysis reaction occurs entirely on the surface of the metal particles, a high dispersion or size control is required to improve the catalytic activity and reduce the consumption of the catalysts [3]. Unfortunately, aggregation of naked nanoparticles often prohibits tailoring of particle size. For this reason, many attempts have been made to immobilize or stabilize Pd nanoparticles in a wide variety of supports, such as polymers, organic-inorganic hybrid materials, and glass-polymer composites, as well as on common inorganic substrates, such as carbon, silica, zeolites or carbon nanotubes [1-2]. Herein hyperbranched polyglycidole (HPG) is used as support, it also functions as reducing agent and stabilizer. We report green and innovative magnetic semi-heterogeneous efficient palladium catalyst system that has been immobilized hyperbranched polyglycidole (acting as support, reducing agent and stabilizer) coated magnetic Fe3O4 nanoparticles (Fe3O4@HPG/Pd0) for effective palladium-catalyzed Suzuki–Miyaura coupling reactions in room temperature and aqueous media.
Keywords:
Authors
Hamid Azizollahi
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad ۹۱۷۷۹۴۸۹۷۴, Iran.
Hossein Eshghi,
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad ۹۱۷۷۹۴۸۹۷۴, Iran.
Mehdi Bakavoli
Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad ۹۱۷۷۹۴۸۹۷۴, Iran.