Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 696, Issue 13, Pages 2689-2692Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2011.04.012
Keywords
Sonogashira coupling reaction; Polymer-supported palladium catalyst; Heterogeneous catalysis; Water medium
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Heterogeneous Sonogashira coupling of terminal alkynes with aryl halides was studied over a polymer-supported macrocyclic Schiff base palladium complex. The cross-coupling reaction proceeded smoothly by adding a piperidine in water medium. The catalyst exhibited effective catalytic activities to afford the corresponding products in good to excellent yields under copper-free conditions. Furthermore, the catalyst could be easily recovered and reused for several times without a significant loss of its activity. (C) 2011 Elsevier B. V. All rights reserved.
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