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  • Title: Gassman's intramolecular [2 + 2] cationic cycloaddition. formal total syntheses of raikovenal and epi-raikovenal.
    Author: Ko C, Feltenberger JB, Ghosh SK, Hsung RP.
    Journal: Org Lett; 2008 May 15; 10(10):1971-4. PubMed ID: 18422320.
    Abstract:
    The first intramolecular version of Gassman's cationic [2 + 2] cycloaddition employing vinyl acetals tethered to an unactivated olefin and its application in the formal syntheses of raikovenal and epi-raikovenal are described.
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