Extension of the Alkane Bridge in BisNHC−Palladium−Chloride Complexes. Synthesis, Structure, and Catalytic Activity
A series of bisNHC chelate ligands with alkyl bridges of different chain lengths and their palladium complexes have been prepared. The influence of the different bridges on the solid-state structure and reactivity of the complexes has been studied. The catalytic activity of the palladium complexes w...
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Veröffentlicht in: | Organometallics 2006-10, Vol.25 (22), p.5409-5415 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A series of bisNHC chelate ligands with alkyl bridges of different chain lengths and their palladium complexes have been prepared. The influence of the different bridges on the solid-state structure and reactivity of the complexes has been studied. The catalytic activity of the palladium complexes was successfully tested in the Mizoroki−Heck reaction and the catalytic CH activation of methane. The ethylene-bridged palladium complex showed the highest catalytic activity in the CH activation of methane and the Mizoroki−Heck coupling of bromoarenes, while for unreactive chloroarenes bisNHC complexes with longer bridges give better results. |
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ISSN: | 0276-7333 1520-6041 |
DOI: | 10.1021/om060577a |