Ions α-cétocarbenium : Influence de la nature de la fonction carbonyle sur la reactivite des ions α-ceto 4-t.Bu cyclohexylcarbenium |
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Authors: | J.P. Bégué M. Charpentier-Morize C. Pardo |
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Affiliation: | Groupe de Recherches No. 12, CNRS, 2 rue Henri Dunant, 94-Thiais, France |
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Abstract: | α-keto 4-t.Bu cyclohexylcarbenium ions formed by AgSbF6-CH2Cl2 dehalogenation of α-keto 1-bromo 4-t.Bu cyclohexanes, give the corresponding α-ethylenic carbonyl compounds and bicyclic oxonium salts. The ratio of products does not vary according to the electronic environment of the carbonyl function but depends on the size of the adjacent group, suggesting that the α-ketocarbenium ion conformation determines the product ratio. |
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