title: A [2+2+2] cyclization strategy for the synthesis of phosphorus embedding [6]helicene-like structures.
abstract: A Ni(0) promoted intramolecular [2+2+2] cyclotrimerization of triynes provides suitable access to a new series of phosphorus embedding helicenes. [6]Oxahelicenes in which the helical sequence terminates with a phosphole oxide unit have been prepared in both racemic and enantiopure forms and characterized by X-ray diffraction studies.
authors.affiliation: Institut de Chimie des Substances Naturelles, CNRS UPR 2301 - Centre de Recherche de Gif - 1, av. de la Terrasse, 91198 Gif-sur-Yvette, France. angela.marinetti@cnrs.fr arnaud.voituriez@cnrs.fr.
authors.forename: Paul
authors.initials: P
authors.lastname: Aillard
authors.forename: Pascal
authors.initials: P
authors.lastname: Retailleau
authors.forename: Arnaud
authors.initials: A
authors.lastname: Voituriez
authors.forename: Angela
authors.initials: A
authors.lastname: Marinetti