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Palladium nanoparticles embedded in improved mesoporous silica: a pH‐triggered phase transfer catalyst for Sonogashira reaction
Author(s) -
Zhao Xiaohua,
Liu Xiang,
Zhu Yaoqin,
Lu Ming
Publication year - 2015
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.3349
Subject(s) - sonogashira coupling , chemistry , catalysis , palladium , mesoporous silica , heterogeneous catalysis , nanoparticle , mesoporous material , aqueous solution , nanocomposite , chemical engineering , copper , inorganic chemistry , organic chemistry , engineering
An efficient and reusable pH‐responsive mesoporous silica nanocomposite shuttle‐supported palladium catalyst was synthesized, which efficiently promotes the Sonogashira reaction in water‐based biphasic systems. This catalyst of shell‐embedded palladium nanoparticles is highly dispersed in organic phase in a pH range from 9 to 10 just like a homogeneous catalyst, and can be separated and reused like a heterogeneous one by adjusting the pH value of the aqueous medium. In addition, Sonogashira reactions can be performed without a copper co‐catalyst. Copyright © 2015 John Wiley & Sons, Ltd.