Investigation of the catalytic hydeogenation of disubstituted benzenes and the configurational isomerization of the corresponding cyclohexanes

Communication 4. Investigation of the influence of substituents in the benzene ring of methyl esters of aromatic acids on its reactivity in the reaction of hydrogenation of A Ru/C catalyst
  • L. Kh. Freidlin
  • E. F. Litvin
  • R. N. Gurskii
  • R. V. Istratova
  • I. L. Vaisman
Physical Chemistry
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Conclusions

  1. 1.

    The rate constants of hydrogenation k0, the adsorption coefficients b, and the relative reactivity S in the competitive hydrogenation of methyl esters of aromatic acids on a Ru/C catalyst were determined.

     
  2. 2.

    The decrease in the rate of hydrogenation of the aromatic ring of the ester and the value of its relative adsorption coefficients when a new substituent is introduced is due to a substantial degree to steric hindrance.

     
  3. 3.

    The disruption of the correlation of k0 and b from methyl benzoate to methyl p-aminobenzoate is explained by displacement of H2 as a result of the strong adsorption of the amino derivative and its hydrogenation product.

     

Keywords

Ester Benzene Methyl Ester Cyclohexane Aromatic Ring 

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Literature cited

  1. 1.
    G. Gilman and G. Conn, Advances in Catalysis,9, 735 (1957).Google Scholar
  2. 2.
    H. A. Smith and W. E. Campbell, Proceed, of the Third Intern. Congr. of Catalysis, Amsterdam, Vol. 2 (1965), pp. 1373, 1386.Google Scholar
  3. 3.
    H. A. Smith and E. F. Pennekamp, J. Amer. Chem. Soc.,67, 279 (1945).Google Scholar
  4. 4.
    C. P. Rader and H. A. Smith, J. Amer. Chem. Soc.,84, 1443 (1962).Google Scholar
  5. 5.
    J. Jungers and L. Sapsus, Kinetic Methods of Investigation of Chemical Processes [Russian translation], Khimiya, Leningrad (1972), p. 247.Google Scholar
  6. 6.
    L. Kh. Freidlin, E. F. Litvin, G. K. Oparina, R. N. Gurskii, R. V. Istratova, and L. V. Videneeva, Zh. Organ. Khimii,5, 959 (1973).Google Scholar
  7. 7.
    E. F. Litvin, L. Kh. Freidlin, R. N. Gurskii, G. K. Oparina, R. V. Istratova, and L. I. Gosteva, Zh. Organ. Khimii,10, 1475 (1974).Google Scholar
  8. 8.
    L. Kh. Freidlin, E. F. Litvin, R. N. Gurskii, G. K. Oparina, and R. V. Istratova, Zh. Organ. Khimii,10, 1202 (1974).Google Scholar
  9. 9.
    R. N. Gurskii, G. K. Oparina, R. V. Istratova, I. L. Vaisman, L. Kh. Freidlin, E. F. Litvin, and T. D. Ionova, USSR Patent No. 284979, 1970; Byul. Izobr. No. 33 (1970).Google Scholar
  10. 10.
    A. A. Balandin, Izv. Akad. Nauk SSSR, Otd. Khim., 339 (1945).Google Scholar
  11. 11.
    L. Kh. Freidlin, N. M. Nazarova, M. A. Abduraimova, and S. I. Shcherbakova, Neftekhimiya,13, 635 (1973).Google Scholar
  12. 12.
    E. F. Litvin, L. Kh. Freidlin, and S. K. Tilyaev, Izv. Akad. Nauk SSSR, Ser. Khim., 1220 (1968).Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • L. Kh. Freidlin
    • 1
    • 2
  • E. F. Litvin
    • 1
    • 2
  • R. N. Gurskii
    • 1
    • 2
  • R. V. Istratova
    • 1
    • 2
  • I. L. Vaisman
    • 1
    • 2
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRMoscow
  2. 2.All-Union Scientific Research and Planning Institute of MonomersTula

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