Unexpected [2 + 2] cycloaddition between the P = O group of P-(2,4,6-triisopropylphenyl) P-heterocycles and dimethyl acetylenedicarboxylate

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The reaction of 1-(2,4,6-triisopropylphenyl)-1,2-dihydrophosphinine 1-oxide 1d with dimethyl acetylenedicarboxylate (DMAD) affords, surprisingly, oxaphosphetene 3 instead of the expected Diels-Alder cycloadduct; the unusual reactivity of the trialkylphenylphosphine oxides towards DMAD seems to be of general value.

Original languageEnglish
Pages (from-to)1423-1424
Number of pages2
JournalChemical Communications
Issue number15
Publication statusPublished - Aug 7 1999


ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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