The PMR spectra of substituted alkoxy-β-ketoesters

  • M. A. Aleskerov
  • S. S. Yufit
  • S. B. Rozenberg
  • V. F. Kucherov
Physical Chemistry
  • 15 Downloads

Conclusions

  1. 1.

    The physical constants of six new alkoxy-β-ketoesters of the type of (I) with phenyl-, nitrophenyl-, and methylacetylene substituents, were synthesized and determined, and three of them were separated into individual diastereomers.

     
  2. 2.

    The PMR spectra of 10 alkoxy-β-ketoesters were studied. An anomalously large number of absorption lines for the methylene protons of the ethoxy group in acetylene compounds and for the methylene protons of the carbethoxy group in phenyl compounds was detected. It was established that in the first case this is due to the nonequivalence of the indicated protons, while in the second it is due to the nonequivalence of the molecules of the diastereomers.

     

Keywords

Methylene Phenyl Acetylene Absorption Line Nitrophenyl 

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Literature cited

  1. 1.
    S. S. Yufit, V. N. Sapunov, G. M. Kunitskaya, Zh. A. Krasnaya, and V. F. Kucherov, Reakts. Sposobnost' Organ. Soed.,6, No. 1, 19, 143, 154, 161, 170 (1969).Google Scholar
  2. 2.
    S. S. Yufit, Zh. A. Krasnaya, T. S. Levchenko, and V. F. Kucherov, Izv. Akad. Nauk SSSR, Ser. Khim., 132 (1967).Google Scholar
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    M. A. Aleskerov, S. S. Yufit, and V. F. Kucherov, Izv. Akad. Nauk SSSR, Ser. Khim., 2341 (1972).Google Scholar
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    Zh. A. Krasnaya, G. M. Kunitskaya, E. P. Prokof'ev, N. N. Shepet'ko, S. S. Yufit, and V. F. Kucherov, Izv. Akad. Nauk SSSR, Ser. Khim., 2310 (1970).Google Scholar

Copyright information

© Plenum Publishing Corporation 1976

Authors and Affiliations

  • M. A. Aleskerov
    • 1
  • S. S. Yufit
    • 1
  • S. B. Rozenberg
    • 1
  • V. F. Kucherov
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRMoscow

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