Stereoselectivity of heterogeneous catalysts, modified by optically active polyelectrolytes

  • V. K. Latov
  • V. M. Belikov
  • K. K. Babievskii
  • A. I. Vinogradova
Organic and Biological Chemistry
  • 13 Downloads

Conclusions

  1. 1.

    The hydrogenation of the methyl ester ofα-acetamidocinnamic acid over Pd-black and sketetal Ni, modified by optically active copolymers of styrene with alanine maleimide, gives an optically active phenylalanine with an optical purity of 1–2%.

     
  2. 2.

    The modification of Pd-black by aqueous solutions of optically active copolymers revealed that the modification pH affects not only the value, but also the sign of rotation of the formed phenylalanine.

     
  3. 3.

    The value and character of the catalyst stereoselectivity as a function of the modification pH is explained by the formation of various types of complexes on the catalyst surface, due to the configurational and conformational changes in the optically active polyelectrolyte as a function of its degree of dissociation.

     

Keywords

Hydrogenation Methyl Ester Aqueous Solution Methyl Ester 

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Copyright information

© Consultants Bureau 1974

Authors and Affiliations

  • V. K. Latov
    • 1
  • V. M. Belikov
    • 1
  • K. K. Babievskii
    • 1
  • A. I. Vinogradova
    • 1
  1. 1.Institute of Heteroorganic CompoundsAcademy of Sciences of the USSRUSSR

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