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Déconjugaison d'énones dérivées de sucres Communication préliminaire |
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| Authors: | Jean M J Tronchet Bernard Gentile Tho Nguyen-Xuan |
| Abstract: | Deconjugation of sugars enones. Preliminary Communication Branched-chain sugar enones 1 and 2 ( R = Ac) deconjugated toposelectively (only the E isomers reacting) to 3 . The same phenomenon was noted in the case of Z- 4 which gave E- 5 . The kinetic parameters of these reactions favored a concerted mechanism, i.e. a 1, 5]-sigmatropic shift. |
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