ISSN:
1588-2837
Schlagwort(e):
diene condensation
;
α-methacrolein
;
alloocimene
;
zeolite
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02475465
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