Asymmetric Hydrogenation of Ethyl Pyruvate Using Ptcontaining Zeolites Modified With (-)-Cinchonidine

  • W. Reschetilowski
  • U. Böhmer
  • J. Wiehl

Abstract

Platinum loaded, (-)-cinchonidine modified zeolites of the types Y, ZSM-35, β and ZSM-5 manifest high catalytic activity for the asymmetric hydrogenation of ethyl pyruvate to ethyl lactate. The catalysts based on Y and ZSM-35 zeolites show the highest enantioselectivity. To obtain the highest reaction rates and the optical yields the Pt content should be around 5 wt%

Enantiomeric excess is strongly influenced by the type of solvent used and can be raised from 60% ee. to 80% ee. merely by varying the solvents.

Keywords

Nickel Ethyl Acetone Platinum Zeolite 

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • W. Reschetilowski
    • 1
  • U. Böhmer
    • 1
  • J. Wiehl
    • 2
  1. 1.Karl-Winnacker-Institut der DECHEMA e.VFrankfurt am MainGermany
  2. 2.W.C. Heraeus GmbHHanauGermany

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