title: Efficient access to β-vinylporphyrin derivatives via palladium cross coupling of β-bromoporphyrins withN-tosylhydrazones.
abstract: This work describes a new approach to obtain new β-vinylporphyrin derivatives through palladium-catalyzed cross-coupling reaction of 2-bromo-5,10,15,20-tetraphenylporphyrinatozinc(II) withN-tosylhydrazones. This is the first report of the use of such synthetic methodology in porphyrin chemistry allowing the synthesis of new derivatives, containing β-arylvinyl substituents.
authors.affiliation: Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, 24020-150 Niterói, RJ, Brazil; QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Vinicius R
authors.initials: VR
authors.lastname: Campos
authors.affiliation: QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Ana T P C
authors.initials: AT
authors.lastname: Gomes
authors.affiliation: Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, 24020-150 Niterói, RJ, Brazil.
authors.forename: Anna C
authors.initials: AC
authors.lastname: Cunha
authors.affiliation: QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Maria da Graça P M S
authors.initials: MD
authors.lastname: Neves
authors.affiliation: Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, 24020-150 Niterói, RJ, Brazil.
authors.forename: Vitor F
authors.initials: VF
authors.lastname: Ferreira
authors.affiliation: QOPNA and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: José A S
authors.initials: JA
authors.lastname: Cavaleiro
keywords: N-tosylhydrazones; Pd-catalyzed cross coupling; porphyrins