Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/418
Title: Synthesis, characterization and catalytic applications of palladium nanoparticle-cored dendrimers stabilized by metal–carbon bonds
Authors: Ratheesh Kumar, V K
Sreedevi, K
Gopidas, K R
Keywords: Heterogeneous catalysis
Nanocatalysis
Nanoparticles
Palladium
Dendrimers
Cross-coupling
Issue Date: Jun-2012
Publisher: Wiley
Citation: European journal of organic chemistry 2012(18):3447-3458;2012
Abstract: The synthesis and characterization of four generations of palladium nanoparticle-cored Fréchet-type dendrimers (Pd-Gn)possessing direct palladium–carbon bonds are reported. These core–shell materials have been synthesized by the simultaneous reduction of different generation diazodendrons and PdII in an organic medium. The resulting organic–inorganic hybrid materials were characterized by IR, NMR and UV/Vis spectroscopic techniques. The formation of nearly spherical particles of 2–4 nm diameter was confirmed by TEM studies. The efficiency of one member of this series, Pd-G1, in catalysing important C–C bond-forming reactions such as Suzuki, Stille and Hiyama coupling reactions was investigated.The results clearly show that Pd-G1 can efficiently catalyse the cross-coupling of arylboronic acids, aryl stannanes and organosilicon compounds with differently substituted aryl halides in addition to efficiently catalysing hydrogenation reactions. The catalyst exhibited good recovery and recyclability in Suzuki coupling reactions. The study suggests that a single catalyst capable of catalysing several reactions can be designed
URI: http://hdl.handle.net/123456789/418
Appears in Collections:2012

Files in This Item:
File Description SizeFormat 
2012 _00251.19 MBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.