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A practical and efficient synthesis of various 1,2,5‐tricarbonyl compounds is described. The synthesis has been carried out by a conjugate addition of methyl cyanoacetate to the β‐position of α,β‐unsaturated carbonyl compounds and a subsequent copper(I) iodide‐catalyzed aerobic oxidation. In addition, various α‐aryl‐ and α‐alkyl‐α‐keto esters have been synthesized using a similar approach.
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Kim et al. (2011) studied this question.
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