## Introduction. Z-E conformational isomerism of the title compounds has been a long-standing problem in terpene chemistry. In most literature the Z-("cis")-conformation is assigned to nerol, the E-("trans")-conformation to geraniol. In 1965, Rummens 1) reversed these assignments, based mainly on
Conformational behaviour and E/Z isomerization of N-acyl and N-aroylhydrazones
β Scribed by Gerardo Palla; Giovanni Predieri; Paolo Domiano; Carlo Vignali; Walter Turner
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 385 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4020
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## Abstract __Z__, __E__βIsomerization has been investigated for the series of the __N__βarylthioβ1,4βbenzoquinonimines using a line shape analysis in the ^1^H NMR spectra. Thermodynamic parameters and substituent effects have been analyzed for the isomerization process. It has been shown based on
The E,Z-isomerization reaction and stability of acylated anthocyanins under the influence of UV irradiation was studied. Among monoacylated anthocyanins in flower petals the E-configurated cinnamoyl derivative residues are predominant. However, these E-isomers are readily isomerized to Z-forms in ac