Stereoselective Synthesis of Cyclic Ethers by Intramolecular Trapping of Dicobalt Hexacarbonyl-Stabilized Propargylic Cations
2003
Betancort, Juan M. | Martín, Tomás | Palazón, José M. | Martín, Víctor S. | Gobierno de Canarias | Ministerio de Ciencia y Tecnología (España) | Ministerio de Educación y Cultura (España)
The intramolecular attack of a hydroxy group on an exo-biscobalthexacarbonyl propargylic cation provides cyclic ethers with six- to nine-membered rings. The scope and limitations of the methodology are described. The reaction is stereoselective when additional stereocenters are present, providing iterative methodology to access ladder-like cyclic ethers.
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