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LnNi5−xCux Hydrides modified by R,R-(+)-tartaric acid as catalysts for ethyl acetoacetate hydrogenation

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    We have demonstrated for the first time the possibility of hydrogenating the C=O bond in acetoacetic ester on intermetallide hydrides with the general formula LnNi5−xCuxHn (where Ln is lanthanum, samarium, or gadolinium; 1⩽x⩽5), and a relationship has been established between the nature of the-catalyst and the optical yield of the reaction.

  2. 2.

    It has been found that the pH of the modifying solution affects the dissymmetric properties of the catalyst; the maximum optical yield is observed at pH 5 for the IMC hydrides containing lanthanum, and at pH 9 for the IMC hydrides containing samarium and gadolinium.

  3. 3.

    A study has been made of the influence of the hydrogenation conditions (initial hydrogen pressure and temperature) on the enantioselectivity of the reaction.

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Literature cited

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Authors and Affiliations

  1. N. D. Zelinskii Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow

    E. V. Starodubtseva, I. R. Konenko, E. I. Klabunovskii, E. M. Savitskii, V. P. Mordovich & T. P. Savost'yanova

Authors
  1. E. V. Starodubtseva
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  2. I. R. Konenko
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  3. E. I. Klabunovskii
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  4. E. M. Savitskii
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  5. V. P. Mordovich
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  6. T. P. Savost'yanova
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 758–762, April, 1984.

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Starodubtseva, E.V., Konenko, I.R., Klabunovskii, E.I. et al. LnNi5−xCux Hydrides modified by R,R-(+)-tartaric acid as catalysts for ethyl acetoacetate hydrogenation. Russ Chem Bull 33, 696–700 (1984). https://doi.org/10.1007/BF00947816

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  • DOI: https://doi.org/10.1007/BF00947816

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