caa a22 4500 467991766 CHVBK 20180323112546.0 cr unu---uuuuu 170328e19901201xx s 000 0 eng 10.1007/BF00473966 doi (NATIONALLICENCE)springer-10.1007/BF00473966 1H and 13C NMR study of azido-tetrazole tautomerism of 2-azido-4-methylpyrimidine [Elektronische Daten] [V. Krivopoalov, V. Mamatyuk, V. Mamaev] Using 1H and 13C NMR and IR spectroscopic methods, it was found that 2-azido-4-methylpyrimidine exists in solutions in tautomeric equilibrium with two tetrazole forms, the ratio between which is determined by the polarity of the solvent, while in a crystalline state, according to the 13C NMR CP MAS data it has the structure of the 7-methyltetrazolo[1,5-a]pyrimidine isomer. Plenum Publishing Corporation, 1991 Krivopoalov V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut Mamatyuk V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut Mamaev V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/12(1990-12-01), 1370-1375 0009-3122 26:12<1370 1990 26 10593 https://doi.org/10.1007/BF00473966 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00473966 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Krivopoalov V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut NATIONALLICENCE 700 1- Mamatyuk V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut NATIONALLICENCE 700 1- Mamaev V. Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR, 630090, Novosibirsk aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/12(1990-12-01), 1370-1375 0009-3122 26:12<1370 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer