title: Branched phospha[7]triangulanes.
abstract: A highly strained, thermally stable (up to 150 degrees C) branched phospha[7]triangulane was synthesized from the second-generation bicyclopropylidene and transient phosphinidene [Ph-P=W(CO)5], followed by demetalation in refluxing xylene. Bulkier transient CuCl-alkene-complexed phosphinidene gave 2-phosphabicyclo-[3.2.0]hept-1(5)-ene as an additional product. The "outer sphere" spirocyclopropanes provide a stabilizing factor for both of these novel compounds.
authors.affiliation: Department of Chemistry, Faculty of Sciences, Vrije Universiteit, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
authors.forename: J Chris
authors.initials: JC
authors.lastname: Slootweg
authors.forename: Marius
authors.initials: M
authors.lastname: Schakel
authors.forename: Frans J J
authors.initials: FJ
authors.lastname: de Kanter
authors.forename: Andreas W
authors.initials: AW
authors.lastname: Ehlers
authors.forename: Sergei I
authors.initials: SI
authors.lastname: Kozhushkov
authors.forename: Armin
authors.initials: A
authors.lastname: de Meijere
authors.forename: Martin
authors.initials: M
authors.lastname: Lutz
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Spek
authors.forename: Koop
authors.initials: K
authors.lastname: Lammertsma