caa a22 4500 467992673 CHVBK 20180323112549.0 cr unu---uuuuu 170328e19900401xx s 000 0 eng 10.1007/BF00497211 doi (NATIONALLICENCE)springer-10.1007/BF00497211 NMR spectra of cyclic nitrones. 5. 13C NMR spectra of the potential tautomeric systems of amino-, hydroxy-, and mercaptonitrones in the series of 3-imidazoline 3-oxide [Elektronische Daten] [G. Shchukin, I. Girgor'ev, L. Volodarskii] The position of the tautomeric equilibrium in amino-, hydroxy, and mercaptonitrones was determined by the 13C NMR method for the case of the derivatives of 3-imidazoline-3-oxide. It was shown that the tautomeric equilibrium in the OH and SH derivatives is shifted toward the oxo and thioxo forms (∼95%). The chemical shifts of the carbon atoms of the nitrone group in the α-N-, α-O-, and α-S-substituted nitrones lie in the region of 137-150 ppm. Plenum Publishing Corporation, 1990 Shchukin G. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut Girgor'ev I. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut Volodarskii L. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/4(1990-04-01), 409-414 0009-3122 26:4<409 1990 26 10593 https://doi.org/10.1007/BF00497211 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00497211 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shchukin G. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut NATIONALLICENCE 700 1- Girgor'ev I. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut NATIONALLICENCE 700 1- Volodarskii L. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, USSR aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/4(1990-04-01), 409-414 0009-3122 26:4<409 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer