Journal of Organic Chemistry p. 2557 - 2561 (1981)
Update date:2022-09-26
Topics:
Mock, William L.
Tsou, Hwei-Ru
Reaction of a number of ketones with diethoxycarbenium fluoroborate in the presence of N,N-diisopropylethylamine at low temperature in methylene chloride results in a preparatively useful conversion to α-(diethoxymethyl) ketones.The method is compatible with arene, nitrile, chloride, and ester functional groups.With unsymmetrically substituted ketones, it is regioselective for the less substituted α-position.In favorable cases α,α'-dialkylation occurs.Conjugated ketones react normally at the saturated position adjacent to the carbonyl group.The mechanism of the reaction is considered.
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