Aromaticity and Extrusion of Benzenoids Linked to [o-COSAN] - : Clar Has the Answer.
Jordi PoaterClara ViňasDavid OlidMiquel SoláFrancesc TeixidorPublished in: Angewandte Chemie (International ed. in English) (2022)
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.