Asymmetric Double-Bond Isomerization of 4,7-Dihydro- to 4,5-Dihydro-1,3-dioxepins

Authors

  • Dr. Herbert Frauenrath,

    Corresponding author
    1. Institut für Organische Chemie der Technischen Hochschule, Prof.-Pirlet-Strasse 1, D-5100 Aachen (FRG)
    • Institut für Organische Chemie der Technischen Hochschule, Prof.-Pirlet-Strasse 1, D-5100 Aachen (FRG)
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  • Thomas Philipps

    1. Institut für Organische Chemie der Technischen Hochschule, Prof.-Pirlet-Strasse 1, D-5100 Aachen (FRG)
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Abstract

original image

Isomerization to optically active cyclic vinyl ethers 2 has been accomplished with the cyclic allyl ethers 1 in the presence of chiral Ru or Rh catalysts. The magnitude of the ee value (at present up to 25%) depends on the substituents R.

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