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Aromaticity and Extrusion of Benzenoids Linked to [o-COSAN]- : Clar Has the Answer
Jordi Poater1,2, Clara Viñas3, David Olid3
1Departament de Química Inorgànica i Orgànica & IQTCUB, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
Angewandte Chemie (International Ed. in English)
|February 17, 2022
Abstract:
Benzene and pyrene can be synthetically linked to [o-COSAN]- keeping their aromaticity. In contrast, naphthalene and anthracene are extruded in the same reaction. We have proven that extrusion is only favorable if the number of Clar's π-sextets remains constant. Thus, Clar has the answer to whether an attached polycyclic aromatic hydrocarbon to [o-COSAN]- is extruded or not.