title: General synthesis of thiophene and selenophene-based heteroacenes.
abstract: [reaction: see text] A new intramolecular triple cyclization of bis(o-haloaryl)diacetylenes, via dilithiation followed by reaction with chalcogen elements, produces pi-conjugated compounds containing heterole-1,2-dichalcogenin-heterole fused tricyclic skeletons. The subsequent dechalcogenation with copper metal affords a series of thiophene- and selenophene-based heteroacenes.
authors.affiliation: Department of Chemistry, Graduate School of Science, Nagoya University, and SORST, Japan Science and Technology Agency, Chikusa, Nagoya 464-8602, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Okamoto
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kudoh
authors.forename: Atsushi
authors.initials: A
authors.lastname: Wakamiya
authors.forename: Shigehiro
authors.initials: S
authors.lastname: Yamaguchi