Conclusions
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1.
13C chemical shifts and spin-spin coupling constants\(J_{^{13} C,H} \) have been determined for the ω-amino- 1,3-diketone and diesters.
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2.
It has been shown that there is a correlation between the chemical shifts for the olefinic cations and the π-electron density alternation.
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3.
Breakdown of the coplanar arrangement of the carbonyl groups of the diene ω-amino-1,3-diketones results in a marked deshielding of the carbonyl carbons.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2301–2307, October, 1978.
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Prokof'ev, E.P., Krasnaya, Z.A. 13C NMR spectra of unsaturated conjugated ω-amino-l, 3-diketones and diesters. Russ Chem Bull 27, 2037–2042 (1978). https://doi.org/10.1007/BF00946522
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DOI: https://doi.org/10.1007/BF00946522