Synlett 1996; 1996(10): 1013-1014
DOI: 10.1055/s-1996-5643
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A New Route to Crown Ethers by Ruthenium-Catalyzed Ring Closing Metathesis

Burkhard König* , Clemens Horn
  • *Institut für Organische Chemie der Technischen Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany, Fax: +49(531)3915388, e-mail B.Koenig@tu-bs.de
Further Information

Publication History

Publication Date:
31 December 2000 (online)

The ruthenium-catalyzed ring closing metathesis reaction of bis-allyl ethers of podands 1a-c and 8 gives macrocyclic crown ethers in good yield at room temperature. Only 1 mol% of the ruthenium-carbene complex 2 are necessary to catalyze the reaction. Cyclic products are obtained exclusively, even at high concentrations.

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