Cyclopentannulation was explored as a strategy to access large, stable azaarenes. Buchwald-Hartwig coupling of previously reported di- and tetrabrominated cyclopentannulated N,N'-dihydrotetraazapentacenes furnished stable azaarenes with up to 13 six-membered rings in a row and a length of 3.1 nm. Their optoelectronic and semi-conducting properties as well as their aromaticity were investigated.
Keywords: Aromaticity; Azaacenes; Azaarenes; Cyclopentannulation; Molecular Nanocarbons.
© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.