- Bis-Phosphino-Derivatives of Cyclooctatetraene
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Magnesium-COT reacts with diorganochlorophosphines to yield 1,2-diphosphino-substituted cyclooctatrienes.While the methyl compound leads to ring-concentration, larger substituents at phosphorus give rise to 1,8-diphosphino-octatetraenes (E,Z,Z,E) via retro-electrocyclization.The compounds are fully characterized by NMR. - Keywords: Magnesium-COT, Diphosphines, NMR Spectra
- Benn, Reinhard,Mynott, Richard,Richter, Wolf Juergen
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- 1,8-BIS--1,3,5,7-OCTATETRAENE DURCH UMSETZUNG VON CYCLOOCTATETRAEN-DILITHIUM MIT R2P-Cl
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By reaction of cyclooctatetraene-dilithium with R2P-Cl the expected 1,3,5-cyclooctatriene-7,8-diphosphanes (6) undergo spontaneously a conrotatory ring-opening reaction to give the title compounds.
- Maerkl, G.,Alig, B.,Eckl, E.
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p. 1955 - 1958
(2007/10/02)
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