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Synthesis 2000; 2000(12): 1668-1670
DOI: 10.1055/s-2000-8217
short paper
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Synthesis of Macrocyclic Polyphosphine Oxides and Phosphines by Template Cyclisation and Demetallation

Bernard Lambert* , Jean F. Desreux
  • *Coordination and Radiochemistry, University of Liège, Sart Tilman (B6), B-Liège, Belgium; Fax +32 (4) 3 66 47 36; E-mail: jf.desreux@ulg.ac.be
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Publication Date:
31 December 2000 (online)

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Macrocyclic tetraphosphine oxides are obtained by cyclisation of phenyl[2-(phenylphosphino)ethyl]phosphine copper(I) triflate with an alkyl or aryl bis-halide followed by demetallation with H2S. The procedure is effective even if the metal chelate features five and six-membered rings and is more readily applicable than multi-step non-template approaches. Phosphines are prepared by reduction with neat phenylsilane.

template - phosphine oxide macrocycles - copper - phosphorus - demetallation - phosphine ligands - cyclizations

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