Reversible Template-Directed Activation of Equatorial Double Bonds of the Fullerene Framework: Regioselective Direct Synthesis, Crystal Structure, and Aromatic Properties of Th-C66(COOEt)12


  • This work was supported by the Deutsche Forschungsgemeinschaft (DFG), the Bundesministerium für Forschung und Technologie (BMFT), Hoechst AG, and the Dr. Otto Röhm Gedächtnisstiftung GmbH.


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Activation by a template is the key to the very simple, high-yield synthesis of the stable, Th-symmetric C60 hexaadduct 1 (R = COOEt) from fullerene. The data from a crystal structure analysis of 1 shows an enhanced aromaticity in the remaining benzoid π-electron system relative to C60.