Angewandte Chemie International Edition
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Inside Cover: Stable Hexacenes through Nitrogen Substitution (Angew. Chem. Int. Ed. 37/2011)
Using nitrogen atoms in the perimeter of a hexacene will make the compound considerably more stable than its all-hydrocarbon relative. In their Communication on page 8588 ff, U. H. F. Bunz and co-workers report the synthesis of a tetraaza- and a hexaazahexacene using a palladium-catalyzed cross-coupling of a suitable diaminoanthracene or diaminophenazine derivative with dichloroquinoxaline. The obtained materials are potentially attractive for applications in organic electronics.