title: Stepwise syntheses of tri- and tetraphosphaporphyrinogens.
abstract: A double ring-expansion methodology allows the stepwise synthesis of tri- and tetra-phosphaporhyrinogens. Structural and calculational methods reveal extended delocalisation about their phospholide centres.
authors.affiliation: Laboratoire Hétéroéléments et Coordination, Ecole Polytechnique and CNRS, 91128 Palaiseau cedex, France. Duncan.Carmichael@polytechnique.edu
authors.forename: Duncan
authors.initials: D
authors.lastname: Carmichael
authors.forename: Aurélie
authors.initials: A
authors.lastname: Escalle-Lewis
authors.forename: Gilles
authors.initials: G
authors.lastname: Frison
authors.forename: Xavier
authors.initials: X
authors.lastname: Le Goff
authors.forename: Eric
authors.initials: E
authors.lastname: Muller
mesh_terms: D060326:Chemistry Techniques, Synthetic; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D009943:Organophosphorus Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D011165:Porphyrinogens / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D009943:Organophosphorus Compounds; D011165:Porphyrinogens