Abstract
The electronic structures of some pyridine bases are analyzed by means of 1H and 13C NMR spectroscopic data for substituted pyridines and the calculated bond orders in the pyridine ring. The differences in the chemical bonds in the pyridine ring of isomeric methylpyridines and the carbon—carbon bonds between the ring and the methyl groups in these compounds are in agreement with the experimental data on the thermal stability of the simplest pyridine bases and the gas-phase transformation of the isomeric methylpyridines on an industrial nickel—aluminum catalyst. The possibility of obtaining mono- or dialkylpyridines under these conditions, depending on the structure of the starting pyridine bases, is demonstrated.
Similar content being viewed by others
Literature cited
J. W. Emsley, J. Feeney, and L. H. Sutcliffe, High-Re solution NMR Spectroscopy, Pergamon, Oxford (1965).
G. C. Levy and G. L. Nelson, Carbon-13 Nuclear Magnetic Resonance for Organic Chemists, New York (1972).
N. I. Zatsepina, I. F. Tupitsyn, and L. S. Éfros, Zh. Obshch. Khim., 34, 4065 (1964).
V. V. Antonova, K. P. Bespalov, V. K. Promonenkov, and B. F. Ustavshchikov, USSR Inventor's Certificate No. 696018; Byull. Izobret., No. 41, 97 (1979).
K. P. Bespalov, V. V. Antonova, B. F. Ustavshchikov, N. A. Bednyakova, and V. V. Voronenkov, Zh. Prikl. Khim., 47, 2309 (1974).
Author information
Authors and Affiliations
Additional information
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 371–374, March, 1982.
Rights and permissions
About this article
Cite this article
Antonova, V.V., Ovchinnikova, T.I., Bespalov, K.P. et al. Transformations of pyridine bases on a nickel-aluminum catalyst. Chem Heterocycl Compd 18, 280–283 (1982). https://doi.org/10.1007/BF00522129
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00522129