Synthesis of an isolable diphosphaisobenzene and a stable cyclic allene with six ring atoms

Michael A. Hofmann, Uwe Bergsträßer, Guido J. Reiß, László Nyulászi, Manfred Regitz

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Highly selectively as a single isomer, the diphosphaisobenzene 2 is furnished from the reaction of the phosphatriafulvene 1 with a phosphaalkyne. In addition to NMR and IR spectroscopy, the formation of the six-membered ring allene 3 (X-ray structure analysis), which is stable at room temperature, by chemo-, regio-, and diastereoselective cycloaddition (CA) of trimethylbenzonitrile oxide to the P-C double bond provided proof of its structure.

Original languageEnglish
Pages (from-to)1261-1263
Number of pages3
JournalAngewandte Chemie - International Edition
Issue number7
Publication statusPublished - Apr 3 2000



  • Allenes
  • Cycloadditions
  • Phosphaalkynes
  • Phosphafulvenes
  • Phosphorus heterocycles

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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