Umsetzungen von ω-alkenylsubstituierten Zirconocendichloridkomplexen mit n-Alkyllithiumverbindungen in Gegenwart von Alkenen bzw. Alkinen |
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Authors: | Andrea I Licht |
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Institution: | Laboratorium für Anorganische Chemie der Universität Bayreuth, Postfach 10 12 51, D-95440 Bayreuth, Germany |
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Abstract: | The reaction of ω-alkenyl substituted zirconocene dichloride complexes with two equivalents of n-butyllithium is strongly influenced in the presence of alkenes and alkynes. Metallacyclic zirconocene complexes of novel structures are obtained. The additives alkenes and alkynes compete with the ω-alkenyl substituents and the intermediate 1-butene for the formation of a metallacyclic structure. The reaction of ω-alkenyl substituted zirconocene dichloride complexes with two equivalents of ethyllithium and n-hexyllithium gives analogous reactions and metallacycles as with n-butyllithium. |
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Keywords: | Metallacycles Zirconocene Complexes Cyclization π Donors |
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