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  • Title: Lewis acid-catalyzed nucleophilic substitutions of propargylic and allylic silyl ethers with enol silyl ethers.
    Author: Ishikawa T, Aikawa T, Mori Y, Saito S.
    Journal: Org Lett; 2003 Jan 09; 5(1):51-4. PubMed ID: 12509888.
    Abstract:
    Nucleophilic reactions of various enol silyl ethers with carbocation species generated from propargyl silyl ethers by the action of a Lewis acid have been developed. The present method is highly useful for the introduction of allenic or enyne functionalities into the alpha-position of substituted ketones. [reaction--see text]
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