A study of asymmetric protonation with chiral β-hydroxy sulfoxides. Asymmetric synthesis of (–)-epibatidine
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Hiroshi Kosugi and Michiharu Kato
Abstract
The asymmetric synthesis of (–)-epibatidine 1, employing as the key step the asymmetric protonation of the achiral lithum enolate of cyclohexanone derivative 5 with chiral β-hydroxy sulfoxide 3b, is described.
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