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Diastereomeric Discrimination: Structural Aspects

  • Edward J. Valente
  • Gerard Ruggiero
  • Christopher W. Miller
  • Jeffrey D. Zubkowski
  • Drake Eggleston

Abstract

Study of crystal and molecular structures offers detailed pictures of intermolecular interactions in the solid state. These serve as exemplars for the understanding of intermolecular interactions in the disordered phases of the liquid state and solution. Properties and reactivity of chemical species and systems are axiomatically related to their structure. One of the most important and active areas of structural study concerns molecular complexation. The concept of structural complementarity underlies a wide range of chemical and biological topics embracing antigen-antibody interactions, enzyme-substrate and enzyme-inhibitor interactions, and host-guest relationships, many with potential and application among the separation sciences. One of the oldest of the physical separation methods with a history of practical exploitation is the use of diastereomeric complexes for (partial) resolution of enantiomeric mixtures (Pasteur, 1853). The traditional method takes advantage of the differential solubility of the complexes in an appropriately chosen solvent. Since the less-soluble phase separates from solution usually as a crystalline solid leaving the more-soluble phase in solution, the less-soluble phase is a molecular assembly with macroscopic properties palpably different from its diastereomeric relative. And so it is not surprising that together with the lower solubilities, one finds higher heats of solution, heats of fusion and fusion points for the less-soluble phases (Jacques, Collet & Wilen, 1981).

Keywords

Differential Scanning Calorimeter Carboxylate Oxygen Mandelic Acid Quinoline Ring Fusion Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Edward J. Valente
    • 1
  • Gerard Ruggiero
    • 1
  • Christopher W. Miller
    • 1
  • Jeffrey D. Zubkowski
    • 2
  • Drake Eggleston
    • 3
  1. 1.Department of ChemistryMississippi CollegeClintonUSA
  2. 2.Department of ChemistryJackson State UniversityJacksonUSA
  3. 3.Department of Physical and Structural ChemistrySmithKline Beecham PharmaceuticalsKing of PrussiaUSA

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