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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

Enantiomeric Excess Initial Reaction Rate High Reaction Rate Ethyl Pyruvate Optical Yield 
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 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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