title: Bis(heterocumulenes) derived from the 1,4-diphenyl-1,3-butadiyne framework. Synthesis of three new classes of axially chiral biheteroaryls.
abstract: Bis(ketenimines) and bis(carbodiimides) derived from 1,4-bis(2-aminophenyl)-1,3-butadiynes via two independent biradical cyclizations provided, respectively, axially chiral bis(benzocarbazoles) and bis(quinindolines). Mixed biheteroaryls, consisting of benzocarbazole and quinindoline units, have been also prepared by a slightly modified strategy.
authors: Departamento de Química OrgAnica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain. alajarin@um.es
authors: Mateo
authors: M
authors: Alajarín
authors: Baltasar
authors: B
authors: Bonillo
authors: Angel
authors: A
authors: Vidal
authors: Delia
authors: D
authors: Bautista