title: Palladium-catalyzed dimerization of conjugated diynes: synthesis of (E)-1,2-divinyldiethynylethenes having donor and acceptor chromophores at the terminus of alkyne.
abstract: (E)-1,2-Divinyldiethynylethenes (DVDEEs) having donor and acceptor chromophores at the terminals of alkyne unit 7' were synthesized by the palladium/HOAc-catalyzed dimerization of the conjugated diynes 8 bearing an Si group at the terminus of alkyne (R(1) position), followed by desilylation and subsequent Sonogashira reaction of the resulting terminal alkyne 10 with aryl iodides.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
authors.forename: Nirmal K
authors.initials: NK
authors.lastname: Pahadi
authors.forename: Draxel H
authors.initials: DH
authors.lastname: Camacho
authors.forename: Itaru
authors.initials: I
authors.lastname: Nakamura
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Yamamoto