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Decarboxylation of polymeric acids with conjugated bonds

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

Conclusions

  1. 1.

    The presence of a polyene conjugated chain in polypropiolic acids (PPA) facilitates the deearboxylation reaction and leads to a decrease in the effective activation energy from 42.7 kcal/mole for polyacrylic acid to 6–12.5 kcal/mole for PPA.

  2. 2.

    Polypropiolic acids with different configurations of the polyene chain differ in degree of decarboxylation. The arrangement of the carboxyl groups on both sides of the polyene chain in PPA-(II) prevents interaction of the carboxyls of the neighboring units and promotes an increase in the degree of decarboxylation.

  3. 3.

    The length of effective conjugation apparently has a substantial influence on the decarboxylation reaction. Increasing the portion of conjugation leads to an increase in the rate and a decrease in the effective activation energy of the decarboxylation process both for homopolymers and for copolymers of propiolic acid.

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Literature cited

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Authors and Affiliations

  1. A. V. Topchiev Institute of Petrochemical Synthesis, Academy of Sciences of the USSR, USSR

    M. M. Yandarov, M. A. Geiderikh & B. A. Krentsel'

Authors
  1. M. M. Yandarov
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  2. M. A. Geiderikh
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  3. B. A. Krentsel'
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Additional information

The article is published on the basis of a resolution of the Conference of Editors-in-Chief of the Journals of the Academy of Sciences of the USSR from July 12, 1962, as the dissertation work of M. M. Yandarov.

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 78–84, January, 1970.

The authors would like to express their deep gratitude to B. É. Davydov for his valuable advice during the work and the discussion of the results obtained.

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Yandarov, M.M., Geiderikh, M.A. & Krentsel', B.A. Decarboxylation of polymeric acids with conjugated bonds. Russ Chem Bull 19, 73–77 (1970). https://doi.org/10.1007/BF00913927

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  • DOI: https://doi.org/10.1007/BF00913927

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