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8-quinolylcyclopentadienyl, a ligand with a tailored fit for chelate complexes

8-Lithioquinoline reacts with 2,3,4,5-tetramethylcyclopentenone to give 8-quinolylcyclopentadiene (1/2) after acidic workup and treatment with ammonia. Two of the possible three isomers are formed; the acidic protons on the Cp rings show unusual downfield shifts in the 1H-NMR spectra. Treatment with...

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Bibliographische Detailangaben
Hauptverfasser: Enders, Markus (VerfasserIn) , Rudolph, Ralph (VerfasserIn) , Pritzkow, Hans (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 1996
In: Chemische Berichte - recueil
Year: 1996, Jahrgang: 129, Heft: 4, Pages: 459-463
ISSN:3052-8933
DOI:10.1002/cber.19961290415
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1002/cber.19961290415
Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/cber.19961290415
Volltext
Verfasserangaben:Markus Enders, Ralph Rudolph, and Hans Pritzkow

MARC

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520 |a 8-Lithioquinoline reacts with 2,3,4,5-tetramethylcyclopentenone to give 8-quinolylcyclopentadiene (1/2) after acidic workup and treatment with ammonia. Two of the possible three isomers are formed; the acidic protons on the Cp rings show unusual downfield shifts in the 1H-NMR spectra. Treatment with strong bases led to the intensely coloured anionic 4 which was converted into the trimethylsilyl derivative 5. This is a suitable starting compound for the trihalotitanium and -zirconium compounds 6 and 7. The two complexes were investigated by crystal structure analyses. In both cases the quinolyl nitrogen atom is coordinated to the metal. 
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