title: Murahashi coupling polymerization: nickel(II)-N-heterocyclic carbene complex-catalyzed polycondensation of organolithium species of (hetero)arenes.
abstract: Revisiting Murahashi coupling, we found that it effectively allows polymerization of lithiated (hetero)arenes by nickel(II)-catalyzed polycondensation. Deprotonative polymerization of 2-chloro-3-substituted thiophene with n-butyllithium gave head-to-tail-type poly(3-substituted thiophene). Poly(1,4-arylene)s were obtained by the reaction of the corresponding dibromides through lithium-bromine exchange. A lithiated thiophene derivative obtained via deprotonative halogen dance also underwent polymerization to afford a bromo-substituted polythiophene.
authors.affiliation: Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan.
authors.forename: Kanta
authors.initials: K
authors.lastname: Fuji
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Tamba
authors.forename: Keisuke
authors.initials: K
authors.lastname: Shono
authors.forename: Atsushi
authors.initials: A
authors.lastname: Sugie
authors.forename: Atsunori
authors.initials: A
authors.lastname: Mori