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- W1990957900 abstract "Reaktionen von Acetylenestern mit cyclischen Ketonen und substituierten Acetophenonen Die Kondensation von substituierten Phenylpropiolsäureestern mit cyclischen Ketonen führt zu polycyclischen Pyronen. Die Kombination spektroskopischer Methoden zeigt, daß Cyclopentanon zu 4-Pyronen (I), Cyclohexanon, Cycloheptanon, Cyclooctanon dagegen zu 2-Pyronen (IIa–f) reagiert. Die Kondensation von Ethylarylpropiolaten mit p-Piperazino, p-Piperidino, p(4-Methylpiperazino) und p-Morpholinoacetophenonen ergibt die p-(4-Arylpropiolylpiperazino) acetophenone (IIIa–d), 2-(p-Piperidinophenyl)-6-aryl-4-pyrone (IVa–c), 2-(p-4-Methylpiperazino-phenyl)-6-aryl-4-pyrone (Va–c) und 2-(p-Morpholinophenyl)-6-aryl-4-pyrone (VIa—d). Die Acetylen-β-diketone (VII) erhält man aus Ethyl-p-tolylpropiolat mit p-Piperidinoacetophenon." @default.
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- W1990957900 date "1979-01-01" @default.
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- W1990957900 title "Reactions of Acetylenic Esters with Cyclic Ketones and Substituted Acetophenones" @default.
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- W1990957900 doi "https://doi.org/10.1002/prac.19793210603" @default.
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