Journal
TETRAHEDRON LETTERS
Volume 44, Issue 35, Pages 6595-6599Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(03)01686-1
Keywords
Sonogashira coupling; aryl halides; acetylenes; palladium; tridenatate pincer bis-carabene ligands; clays; immobilization
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Highly active recyclable Pd catalysts modified with a rigid C,N,C-tridentate pincer carbene ligand were successfully applied to the coupling of aryl halides with terminal acetylenes. The immobilization of Pd(11) complexes onto clays has beneficial effects on the recyclability of the catalytic activity over consecutive runs and also on the catalyst's stability, preventing it from Pd(0) formation. (C) 2003 Elsevier Ltd. All rights reserved.
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