• Raimonds E. Valters
  • Wilhelm Flitsch


The problem of ring-chain isomeric interconversions of organic compounds had already aroused the interest of chemists at the end of the last century. However, the use of chemical methods done for the investigation of these interesting phenomena frequently gave erroneous results, even in those cases when the type of structure (ring or chain) was to be determined. Spectroscopic methods (electron and vibration spectroscopy, and nuclear magnetic resonance) are much more efficient for this purpose. Since these methods were developed only after the first active period of study of ring-chain tautomerism, a new and extensive reexamination of the phenomena was to be expected as Hammond had suggested in 1956 [1]. Indeed, this field of organic chemistry has had a real revival during the last three decades.


Levulinic Acid Tautomeric Equilibrium Molar Refractivity Cyclic Isomer Carboxylic Acid Amide 
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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Raimonds E. Valters
    • 1
  • Wilhelm Flitsch
    • 2
  1. 1.Faculty of ChemistryA. Pelshe Riga Polytechnical InstituteRigaUSSR
  2. 2.Organisch-Chemisches InstitutWestfälischen Wilhelms-UniversitätMünsterFederal Republic of Germany

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