학술논문
Phosphorylated PEG (PPEG) as a new support for generation of nano-Pd(0): application to the Heck-Mizoroki and.
Document Type
Article
Source
Subject
*POLYETHYLENE glycol
*ETHYLENE glycol
*MOLECULAR weights
*ETHANOL
*ATOMIC weights
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Language
ISSN
0268-2605
Abstract
Polyethylene glycols (PEGs) with different molecular weights ( Mw = 200, 400, 1000) were phosphorylated to their bis-diphenyl phosphinite derivatives as stable solids which are melted in the range 140-160°C. These phosphorylated PEGs were used as ligands and reducing agents to generate nano-Pd(0) catalysts in 2.5-8.3 nm. The nano-Pd(0) particles supported on phosphorylated PEG200 were applied for the efficient Heck-Mizoroki of ArX (X = Cl, Br, I) at 80-100°C under solvent-free conditions and for the in ethanol at 70°C. The catalyst was recycled easily and reused for several runs. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]