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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
Published on: January 8, 2016
A preferred disrotatory 4n electron Möbius aromatic transition state for a thermal electrocyclic reaction
Michael Mauksch1, Svetlana B Tsogoeva
1Department Chemie und Pharmazie, Lehrstuhl für Organische Chemie I, Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen, Germany.
Abstract:
Not forbidden: Thermal 4n electron electrocyclic reactions of Hückel topology structures proceed via "allowed" conrotatory pathways. However, for a Möbius topology, the Woodward-Hoffmann rules may be reversed and a "forbidden" disrotatory pathway can be preferred as shown theoretically for dodecahexaene 1 that transforms via a Heilbronner-Möbius aromatic transition structure 2 into a cyclic polyene 3.
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