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Planta Med 1973; 24(6): 107-111
DOI: 10.1055/s-0028-1099476
© Georg Thieme Verlag Stuttgart · New York

SEPARATION AND PROTECTION OF π–ELECTRON–RICH COMPOUNDS ON CAFFEINE–IMPREGNATED SILICAGEL LAYERS

Jørgen Lam1
  • Department of Chemistry, University of Aarhus, 8000 Aarhus C, Denmark
1 Paper presented at the „20. Tagung der Gesellschaft für Arzneipflanzenforschung” Helsinki, Finland, July 20.–29.1972.
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Publication Date:
14 January 2009 (online)

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Abstract

On the basis of interactive forces between caffeine and μ–electron systems in aromatic hydrocarbons and in polyacetylenes a method has been developed, by which a better separation occurs when 10 per cent caffeine is added to silicagel than on silicagel alone. Furthermore, the interaction between the caffeine and the μ–electron systems means that less destruction occurs compared to silicagel layers without caffeine.

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