Recyclable polymer-supported Pd catalysts for aryl amination reactions

Polymer-supported palladium catalysts were prepared from three commercially available phosphine-functionalised polymers (PS-PR 2), Pd 2(dba) 3 and P( t-Bu) 3. Catalyst stability was investigated using VT 31P NMR spectroscopy. One of the catalysts can be reused in the amination of bromobenzene and ch...

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Bibliographic Details
Published inTetrahedron letters Vol. 46; no. 43; pp. 7363 - 7366
Main Authors Guinó, Meritxell, Hii, King Kuok (Mimi)
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 24.10.2005
Elsevier
Subjects
Aryl amination
Chemistry
Chemistry, Organic
Palladium
Physical Sciences
Polymer support
Science & Technology
Aryl amination
Polymer support
Palladium
POLYSTYRENE
PHOSPHINE
CROSS-COUPLING REACTION
LIGANDS
COMPLEXES
REACTIVITY
CHLORIDES
palladium
aryl amination
PALLADIUM CATALYSTS
polymer support
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Summary:Polymer-supported palladium catalysts were prepared from three commercially available phosphine-functionalised polymers (PS-PR 2), Pd 2(dba) 3 and P( t-Bu) 3. Catalyst stability was investigated using VT 31P NMR spectroscopy. One of the catalysts can be reused in the amination of bromobenzene and chlorotoluene, up to three times, without loss in yield. Recyclability of the catalysts is dependent on the method of preparation and the nature of the polymer-bound phosphine. Polymer-supported palladium catalysts were prepared from three commercially available phosphine-functionalised polymers (PS-PR 2), Pd 2(dba) 3 and P( t-Bu) 3. Catalyst stability was investigated using VT 31P NMR spectroscopy. One of the catalysts can be reused in the amination of bromobenzene and chlorotoluene, up to three times, without loss in yield. Recyclability of the catalysts is dependent on the method of preparation and the nature of the polymer-bound phosphine.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2005.08.122