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Linear and branched phospha[n]triangulanes

  • J.C. Slootweg
  • , F.J.J. De Kanter
  • , M. Schakel
  • , A.W. Ehlers
  • , S.I. Koshushkov
  • , A. de Meijere
  • , M. Lutz
  • , A.L. Spek
  • , K. Lammertsma

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    Novel, highly stable, linear and branched mono- and diphospha[n]triangulanes were synthesized in high yields by the CuCl-catalyzed phosphinidene addition to spirocyclopropanated methylenecyclopropanes and bicyclopropylidenes. The effect of spirofusion on the electronic properties of these esthetically attractive phosphacycles is apparent from X-ray single crystal structure analyses, which reveals a tightening of the phosphirane ring on additional spirocyclopropanation, and from the NMR features that show deshielded chemical shifts for the ring-phosphorus and -carbon atoms. Steric factors play a role in the addition reaction when the substrate alkene carries a second sphere of spirocyclopropane rings and causes the formation of 2-phosphabicyclo[3.2.0]heptenes in small amounts. These by-products most probably result from addition of the [PhP(Cl)W(CO)
    Original languageEnglish
    JournalChemistry: A European Journal
    DOIs
    Publication statusPublished - 2005

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 6 - Clean Water and Sanitation
      SDG 6 Clean Water and Sanitation

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