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Biaryl formation via Suzuki and Stille coupling reactions using palladium nanoparticle/polymeric N‐heterocyclic carbene grafted silica as recyclable and efficient catalyst
Author(s) -
Ghasemi Soheila,
Farjadian Fatemeh,
Tamami Bahman
Publication year - 2016
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3508
Subject(s) - stille reaction , chemistry , phenylboronic acid , carbene , palladium , coupling reaction , catalysis , polymer chemistry , nanoparticle , suzuki reaction , x ray photoelectron spectroscopy , combinatorial chemistry , organic chemistry , photochemistry , chemical engineering , engineering
Palladium nanoparticles supported on polymeric N ‐heterocyclic carbene grafted silica as an efficient organic–inorganic hybrid catalyst is introduced. Pd 0 nanoparticle formation, which is stabilized by the polymeric N ‐heterocyclic carbene ligands and ionic liquid units, was confirmed using X‐ray photoelectron spectroscopy . Scanning electron microscopy images showed microparticles of modified silica while transmission electron microscopy images displayed a fine distribution of Pd nanoparticles. The modified structure was applied successfully in biaryl formation via Suzuki and Stille coupling reactions . Various biaryls were generated through the reaction of phenylboronic acid or tetraphenyltin with a variety of haloarenes via cross‐coupling reactions . This catalyst showed promising activity after being recycled several times. Copyright © 2016 John Wiley & Sons, Ltd.