A STABLE 3-METHYLENE-1,4-CYCLOHEXADIENE: A NON-AROMATIC TAUTOMER OF A SIMPLE BENZENE
2,4-Dichloro-3-(dimethylaminomethylene)-1,4-cyclohexadiene-1,5-dicarboxaldehyde, a stable derivative of the reactive p-isotoluene, has been isolated by treating cyclohexene-1,3-dione with a Vilsmeier reagent.
Reactions of 2-Cyclohexen-1-ones and Cyclohexane-1,3-diones with Chloro Methylene Iminium Salts
Products are isolated and pathways established for the reactions of cyclohexane-1,3-diones with Vilsmeier reagents.Similarities between those reactions and the reactions of some 2-cyclohexen-1-ones with Vilsmeier reagents are demonstrated.The pathways proposed allow rationalization of products formed by the action of Vilsmeier reagents on a variety of cyclic and acyclic ketones.
Katritzky, Alan R.,Marson, Charles M.
p. 2726 - 2730
(2007/10/02)
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