title: Synthesis and physical properties of zethrene derivatives bearing donor/acceptor substituents at 7,14-positions.
abstract: Zethrene derivatives substituted by phenylethynyl groups bearing electron-donating and/or accepting groups were synthesised by iodine-induced transannular cyclisation of dehydrodinaphtho[10]annulene as the pivotal step followed by Sonogashira coupling reaction. Their physical properties were investigated to elucidate the effects of the substituents on the electronic configuration of the zethrene backbone.
authors.affiliation: Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan. tobe@chem.es.osaka-u.ac.jp.
authors.forename: Daijiro
authors.initials: D
authors.lastname: Hibi
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kitabayashi
authors.forename: Akihiro
authors.initials: A
authors.lastname: Shimizu
authors.forename: Rui
authors.initials: R
authors.lastname: Umeda
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Tobe