From Small Carbocyclic Rings to Porphyrins: A Personal Account of 50 Years of Research


  • Prof. Dr. Emanuel Vogel

    Corresponding author
    1. Roland-Betsch-Strasse 7, 76257 Ettlingen (Germany).
    • Roland-Betsch-Strasse 7, 76257 Ettlingen (Germany).
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    • [†] E. Vogel died on March 30, 2011, shortly after completing this manuscript. Correspondence can be sent to Christiane Vogel (at the same address)


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An Eldorado of compounds is available from cyclooctatetraene, a compound notable for its ability to undergo valence isomerization. This eye-witness account of the development of their chemistry shows how interconnected the various areas of this fascinating research field are.