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Stereochemistry of organophosphorus compounds 15. Synthesis and permutational lability of 1,6,10-trioxa-8,8-dimethyl[(5-methoxy)-5-phosphaspiro(4.5)]dec-2-ene

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  1. 1.

    We have synthesized 1,6,10-trioxa-8,8-dimethyl[(5-methoxy)-5-phosphaspiro(4.5)]dec-2-ene, a compound in which the trigonal-bipyramidal phosphorus bond arrangment undergoes pseudorotation at temperatures below 36°C. Thermodynamic activation parameters for the pseudorotation process have been evaluated from the observed temperature variation of the parameters of the1H NMR spectrum.

  2. 2.

    The enol acetate ofβ-neopentylglycolphosphonepropionic aldehyde has been prepared.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 9, pp. 2000–2006, September, 1977.

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Arbuzov, B.A., Samitov, Y.Y., Mareev, Y.M. et al. Stereochemistry of organophosphorus compounds 15. Synthesis and permutational lability of 1,6,10-trioxa-8,8-dimethyl[(5-methoxy)-5-phosphaspiro(4.5)]dec-2-ene. Russ Chem Bull 26, 1852–1856 (1977).

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  • Acetate
  • Phosphorus
  • Aldehyde
  • Temperature Variation
  • Dimethyl