title: Tetraazuliporphyrin tetracation.
abstract: At the crossroads: A unique carbon-bridged annulene motif--dehydroquatyrin--is imprinted into the molecular structure of the tetraazuliporphyrin tetracation (see picture). The macrocycle, which lies at the intersection of annulene, carbocation, and porphyrin chemistry, is obtained by the standard condensation of azulene and arylaldehyde followed by oxidation. The meso positions of the tetracation are susceptible to anionic or weak nucleophilic attack.
authors.affiliation: Department of Chemistry, University of Wrocław, 14 F.Joliot-Curie St., 50-383 Wrocław, Poland.
authors.forename: Natasza
authors.initials: N
authors.lastname: Sprutta
authors.forename: Stanisław
authors.initials: S
authors.lastname: Maćkowiak
authors.forename: Marzena
authors.initials: M
authors.lastname: Kocik
authors.forename: Ludmiła
authors.initials: L
authors.lastname: Szterenberg
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Lis
authors.forename: Lechosław
authors.initials: L
authors.lastname: Latos-Grazyński