Abstract
The interaction of alloocimene with α-methacrolein on β-zeolite with various substituent cations (Fe, Ni, Zn, Cu and La) as well as on ZSM-5, erionite and mordenite has been studied at room temperature in dichloromethane. Substituent cations in β-zeolite as well as the silica/alumina ratio and alkali metal content in the zeolite structure were found to affect the formation of ocinal diastereomers. Therefore, we assume that a complex of active sites participates in the diene condensation: Alkali metals present in the zeolite suppress the (3+2)-cycloaddition reaction.
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Kuznetsova, T.G., Ione, K.G., Testova, N.V. et al. Diene condensation on zeolites, II. Influence of the zeolite structure and the nature of substituting cation on the reaction of alloocimene with α-methacrolein. React Kinet Catal Lett 62, 287–291 (1997). https://doi.org/10.1007/BF02475465
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DOI: https://doi.org/10.1007/BF02475465