3-Acetoxy-2-cycloalken-1-ones by acetylation of cyclic 1, 3-diketones with ketene

A Boháč, P Hrnčiar

文献索引：Bohac, Andrej; Hrnciar, Pavel Collection of Czechoslovak Chemical Communications, 1991 , vol. 56, # 12 p. 2879 - 2883

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摘要

Abstract Acetylation of lower 1, 3-cycloalkenediones with ketene takes place exclusively at oxygen in contrast to acyclic β-diketones. Thus, 1, 3-cyclopentanedione (I), 1, 3- cyclohexanedione (II) and 5, 5-dimethyl-1, 3-cyclohexanedione (III) afforded the corresponding 3-acetoxy-2-cycloalken-1-ones VI-VIII in quantitative yields. 1, 3- Cycloheptanedione (IV) and 1, 3-cyclooctanedione (V) differed considerably from the ...