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Selective Reduction of Dimedone

Author

Listed:
  • Ulla Létinois

    (DSM Nutritional Products Ltd., Research and Development, P.O Box 2676, 4002 Basel, Switzerland)

  • Werner Bonrath

    (DSM Nutritional Products Ltd., Research and Development, P.O Box 2676, 4002 Basel, Switzerland)

Abstract

The selective hydrogenation of dimedone (1) to the corresponding monoketone 2 over palladium and Amberlyst 15 ® is reported. The product is a synthetic building block for the fragrance and pharmaceutical industry. Advantages of the new catalytic procedure are the high catalyst activity and selectivity, less by-product formation, avoidance of the presence of acid, and consequently, less salt formation due to the omission of a neutralization step. Using a substrate/catalyst ratio of >100 compound 2 can be synthesized in 97% yield at full conversion. Recycling of the catalyst several times has been shown to be feasible without any detectable decrease in selectivity.

Suggested Citation

  • Ulla Létinois & Werner Bonrath, 2009. "Selective Reduction of Dimedone," Sustainability, MDPI, vol. 1(2), pages 1-6, May.
    • Handle: RePEc:gam:jsusta:v:1:y:2009:i:2:p:209-214:d:5029
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