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Hiyama cross‐coupling reaction using Pd(II) nanocatalyst immobilized on the surface of Fe 3 O 4 @SiO 2
Author(s) -
Karami Kazem,
Jamshidian Nasrin,
Nikazma Mohammad Mehdi,
Hervés Pablo,
Shahreza Amir Rezaei,
Karami Ali
Publication year - 2018
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.3978
Subject(s) - catalysis , chemistry , halide , solvent , heterogeneous catalysis , aryl , palladium , coupling reaction , fluoride , chemical engineering , inorganic chemistry , organic chemistry , alkyl , engineering
We report a simple process for the synthesis of Fe 3 O 4 @SiO 2 /APTMS (APTMS = 3‐aminopropyltrimethoxysilane) core–shell nanocatalyst support. The new nanocatalyst was prepared by stabilization of Pd(cdha) 2 (cdha = bis(2‐chloro‐3,4‐dihydroxyacetophenone)) on the surface of the Fe 3 O 4 @SiO 2 /APTMS support. The structure and composition of this catalyst were characterized using various techniques. An efficient method was developed for the synthesis of a wide variety of biaryl compounds via fluoride‐free Hiyama cross‐coupling reactions of aryl halides with arylsiloxane, with Fe 3 O 4 @SiO 2 /APTMS/Pd(cdha) 2 as the catalyst under reaction conditions. This methodology can be performed at 100°C through a simple one‐pot operation using in situ generated palladium nanoparticles. High catalytic activity, quick separation of catalyst from products using an external magnetic field and use of water as green solvent are attributes of this protocol.