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  • Title: [Spectroscopic and chromatographic studies on photochemical isomerism of alpha, beta-diunsaturated ketones].
    Author: Schleuder M, Am Ali F, Otto HH.
    Journal: Pharmazie; 2003 May; 58(5):308-11. PubMed ID: 12785314.
    Abstract:
    Spectroscopic (UV, IR, NMR, MS) and chromatographic (HPLC, GC) investigations show for alpha,beta-diunsaturated ketones with one double bond fixed in a cyclohexene-, furan- or thiophene ring in most examples a photochemical Z/E-isomerization in solution by the influence of light. Investigations of conformers by IR and NMR however are not influenced during usual operations and light protection is not nessessary.
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