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Synthesis 1986; 1986(1): 56-58
DOI: 10.1055/s-1986-31476
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2,3-Bis[triphenylphosphoniomethyl]piperazine; Precursor of a New Heterocyclic Bis-Wittig Reagent

Henri-Jean Cristau* , Laurent Chiche, Françoise Plénat
  • *Laboratoire de Synthèse Organique (Unité Associée au CNRS No 458), E.N.S.C.M., 8, rue de l'Ecole Normale, F-34075 Montpellier Cédex, France
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Publication Date:
20 August 2002 (online)

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The piperazine-bisphosphonium salt 2 is prepared by addition of ethylenediamine to the 1,4-butadienylene-bisphosphonium salt 1; the Wittig reaction of its corresponding bis-ylid provides a new route to 2,3-divinylpiperazines 3.

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