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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
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Published on: March 20, 2017

(E,E)-1,5-Cyclooctadiene: a small and fast click-chemistry multitalent

Henning Stöckmann1, André A Neves, Henry A Day

  • 1University of Cambridge, Department of Chemistry, Lensfield Road, Cambridge, UK CB2 1EW.

Chemical Communications (Cambridge, England)
|May 26, 2011
PubMed

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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
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