Synthesis and Structure of the Smallest Cyclic Cumulene; Reaction of 1,3-Diynes with Zirconocene Complexes

Authors

  • Prof. Dr. Uwe Rosenthal,

    Corresponding author
    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
    • Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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  • Dipl.-Chem. Andreas Ohff,

    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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  • Dr. Wolfgang Baumann,

    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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  • Dr. Rhett Kempe,

    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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  • Dr. Annegret Tillack,

    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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  • Dr. Vladimir V. Burlakov

    1. Max-Planck-Gesellschaft, Arbeitsgruppe “Komplexkatalyse”, an der Universität Rostock, Buchbinderstrasse 5-6, D-18055 Rostock (FRG), Telefax: Int. code + (381)4669369
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    • Institute of Organoelement Compounds of the Russian Academy of Sciences, Moscow (Russia)


  • This work was supported by the Max-Planck-Gesellschaft and the Fonds der Chemischen Industrie. We thank Prof. Dr. G. Oehme for the reception of the research group at the Institut für Organische Katalyseforschung in Rostock.

Abstract

original image

The unexpected result of the reaction of “Cp2Zr” with di-tert-butadiyne was the formation of 1, the smallest possible cyclic cumulene. Other disubstituted butadiynes reacted with “Cp2M” by cleavage, dimerization, or dinuclear complex formation.

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