title: Porphyrin synthesis in water provides new expanded porphyrins with direct bipyrrole linkages: isolation and characterization of two heptaphyrins.
abstract: The use of water for the porphyrin cyclization changes the products completely. Scandium-catalyzed aqueous condensation between pentafluorobenzaldehyde and pyrrole and subsequent oxidation provides novel expanded porphyrins with direct bipyrrole linkages, of which two novel heptaphyrins have been characterized by X-ray analyses.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Hiroto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Shinokubo
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Osuka
mesh_terms: D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D019906:Nuclear Magnetic Resonance, Biomolecular; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry / Q000302:isolation & purification; D011758:Pyrroles / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry
chemical_list: D011166:Porphyrins; D011758:Pyrroles; D014867:Water