title: Synthesis and functionalization of 3,3'-bis(spirodienone)-bridged 2,2'-bithiophene: a new building block for redox-active molecular switching materials.
abstract: Bithiophene derivatives bridged with a bis(spirodienone) unit were synthesized and characterized. Lithiation of the thiophene rings of an unsubstituted derivative proceeded without decomposition of the bis(spirodienone) skeleton. Palladium-catalyzed cross-coupling reactions (Suzuki-Miyaura, Sonogashira) with bromides afforded a variety of pi-extended derivatives. Bond breaking and formation under redox conditions were observed by cyclic voltammetry.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan. kurata@chem.sci.osaka-u.ac.jp
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kurata
authors.forename: Sang
authors.initials: S
authors.lastname: Kim
authors.forename: Takahisa
authors.initials: T
authors.lastname: Fujimoto
authors.forename: Kouzou
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kawase
authors.forename: Takashi
authors.initials: T
authors.lastname: Kubo