• Title of article

    N-Thiophosphorylated and N-Phosphorylated Iminophosphoranes [R3P=N-P(X)R2; X = O, S] as Models for Dendrimers: Synthesis, Reactivity and Crystal Structures

  • Author/Authors

    Donnadieu، Bruno نويسنده , , Larre، Christophe نويسنده , , Caminade، Anne-Marie نويسنده , , Majoral، Jean-Pierre نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 1999
  • Pages
    -600
  • From page
    601
  • To page
    0
  • Abstract
    Several R3P=N-P(X)Rʹ2 and Fe[C5H4Ph2P=N-P(X)Rʹ2]2 derivatives (X = S, O) are readily obtained from Staudinger reactions between phosphanes and N3-P(X)Rʹ2. The P=N-P=X groups are easily alkylated on the X atom with methyl or isopropyl triflates. The alkylation induces a lengthening of the P-X bond, as shown by X-ray diffraction studies. This corresponds to a weakening of the P-X bond which can be cleaved with P(NMe2)3 to yield [P=N-P:] linkages. The presence of tricoordinated phosphorus atoms opens the way to a versatile reactivity, including the reaction with alkyl iodides and functionalized azides. These molecules are good models for screening which types of reagents and reactions could be used with macromolecules possessing also P=N-P=X linkages, such as dendrimers.
  • Keywords
    Phosphorus , Ferrocenes , Phosphorylated iminophosphoranes , Dendrimers , cations
  • Journal title
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
  • Serial Year
    1999
  • Journal title
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
  • Record number

    83555