General synthesis of thiophene and selenophene-based heteroacenes.
[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.
Okamoto
Toshihiro
T
Department of Chemistry, Graduate School of Science, Nagoya University, and SORST, Japan Science and Technology Agency, Chikusa, Nagoya 464-8602, Japan.
Kudoh
Kenichi
K
Wakamiya
Atsushi
A
Yamaguchi
Shigehiro
S