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Synthesis 1989; 1989(12): 967
DOI: 10.1055/s-1989-27451
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An Improved Synthesis of Phospholes

Neil S. Isaacs* , Ghazi Najem El-Din
  • *Department of Chemistry, University of Reading, P.O. Box 224, Reading RG6 2AD, England
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Publication Date:
02 May 2002 (online)

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The application of pressure to the cycloaddition between a 1,3-diene 1 and a dihalogenophosphine2 both reduces the reaction time from days to hours and produces the cycloadduct, a P-halogenophospholenium salt 3 is finely-divided form, which readily undergoes elimination to give the phosphole 4.