Catalytic dehydrochlorination of polychloroalkanes containing the dichloromethylene group

  • R. Kh. Freidlina
  • T. T. Vasil'eva
  • R. G. Gasanov
  • P. V. Petrovskii
  • E. Ts. Chukovskaya
  • N. A. Kuz'mina
Physical Chemistry
Received:
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Conclusions

  1. 1.

    The catalytic dehydrochlorination of polychloroalkanes with the structure Cl(CH2CH2)mCH2CH2·CCl2CH2CHClX, where m=0.1; X=H, Cl, CH3, under the action of Friedel-Crafts catalysts was studied.

     
  2. 2.

    Dehydrochlorination proceeds selectively at the expense of the chloromethylene group in the direction of the less chlorinated and longer portion of the molecule; a mixture of cis- and trans-isomers with the structure Cl(CH2CH2)mCH2CH=CClCH2CHClX is formed.

     
  3. 3.

    An approximate calculation was made of the normal vibrations of cis- and trans-models of the fragment C-CCl=CH-C. cis-trans-Isomers in the polychloroalkenes studied could be identified with the aid of the C-Cl frequencies. On the basis of the IR spectra of the compounds obtained it was established that the mixture formed contains chiefly the trans-isomer.

     
  4. 4.

    The PMR spectra of 11 polychlorohydrocarbons were studied. The parameters of the PMR spectra characterizing varied chlorine-containing groups and their mutual influence were established.

     

Keywords

Chlorinate Expense Mutual Influence Chloromethylene Approximate Calculation 
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

© Consultants Bureau 1972

Authors and Affiliations

  • R. Kh. Freidlina
    • 1
  • T. T. Vasil'eva
    • 1
  • R. G. Gasanov
    • 1
  • P. V. Petrovskii
    • 1
  • E. Ts. Chukovskaya
    • 1
  • N. A. Kuz'mina
    • 1
  1. 1.Institute of Heteroorganic CompoundsAcademy of Sciences of the USSRUSSR

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