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Regioselectivity in the Alkylation of β-Triketones of Cyclohexanes in the Presence of Strong Bases. -The outcome in the direct alkylation of the title triketones in the presence of LDA depends on the reaction temp. and the amounts of the base employed as is demonstrated for the methylation of 2acetyldimedone (I). Regioselective formation of ring-monoalkylated, side-chain monoalkylated or dialkylated products can be realized. Possible mechanistic pathway are discussed. -(ZENYUK, A. A.; KORCHIK, A. V.; LIS, L. G.; UKHOVA, L. I.; Zh. Org. Khim. 28 (1992) 5, 947-949; Inst. bioorg. khim.

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