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Abstract:

Proton magnetic resonance spectra of several mono‐ and disubstituted benzaldehydes were studied using CW, INDOR and double resonance techniques. It was verified that substitution in the para position has no effect on the long‐range coupling of the aldehydic proton with the ring protons five bonds away. Substitution in the ortho and meta positions (with the exception of 2,4‐dinitrobenzaldehyde) follows closely the additivity rule effects of the substituents. Copyright © 1979 Heyden & Son Ltd.

Registro:

Documento: Artículo
Título:The effects of substituents on the 5J long‐range spin‐spin coupling constants in substituted benzaldehydes
Autor:Contreras, R.H.; de Kowalewski, D.G.; Osella, A.
Filiación:Departamento de Física, Facultad de Ciencias Exactas Y Naturales, Ciudad Universitaria, Buenos Aires, Argentina
Año:1979
Volumen:12
Número:9
Página de inicio:542
Página de fin:543
DOI: http://dx.doi.org/10.1002/mrc.1270120907
Título revista:Organic Magnetic Resonance
Título revista abreviado:Magn. Reson. Chem.
ISSN:00304921
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00304921_v12_n9_p542_Contreras

Referencias:

  • Castellano, S., ; De Kowalewski, D.G., Kowalewski, V.J., Double long-range spin-spin couplings between aldehydic and aromatic protons in the N.M.R. spectra of salicylaldehydes (1965) Molecular Physics, 9, p. 319. , 331
  • Buitrago, R., De Kowalewski, D.G., Yommi, R., (1973) J. Mol. Struct, 16, p. 395
  • Castellano, S., Kostelnik, K., (1967), p. 5211. , Tetrahedron Lett; Cox, R.H., (1969) Spectrochim. Acta Part A, 25, p. 1189
  • Hayamizu, K., Yamamoto, O., J. Mol. Spectrosc, 25, p. 422
  • De Kowalewski, D.G., Buitrago, R., Yommi, R., (1972) J. Mol. Struct, 11, p. 195
  • Aksnes, D., Kronhang, F.N., NMR Spectral Parameters of Seven Di-substituted Anilines. (1971) Acta Chemica Scandinavica, 25, p. 1871
  • De Kowalewski, D.G., Contreras, R., (1973) J. Mol. Struct, 16, p. 45
  • Malinowski, E.R., (1972) J. Phys. Chem., 76, p. 1593. , and papers cited therein
  • Contreras, R.H., De Kowalewski, D.G., (1974) J. Mol. Struct, 23, p. 209
  • Kowalewski, V.J., (1969) J. Mol. Spectrosc, 30, p. 531
  • Bothner‐By, A.A., Castellano, S., (1966) LAOCN 3, , Mellon Institute, Pittsburgh, Pa, USA
  • Kowalewski, V.J., (1969) Progress in NMR Spectroscopy, 5, p. 1. , edited by, J. W. Emsley, J. Feeney, L. H. Sutcliffe, Pergamon Press, London
  • Reynolds, W.F., Peat, I.P., Hammer, C.K., An Investigation of Substituent Effects on Coupling Constants to Vinyl Protons in Styrene Derivatives (1974) Canadian Journal of Chemistry, 52, p. 3415
  • Kowalewski, V.J., Contreras, R.H., (1972) J. Magn. Reson, 8, p. 101

Citas:

---------- APA ----------
Contreras, R.H., de Kowalewski, D.G. & Osella, A. (1979) . The effects of substituents on the 5J long‐range spin‐spin coupling constants in substituted benzaldehydes. Organic Magnetic Resonance, 12(9), 542-543.
http://dx.doi.org/10.1002/mrc.1270120907
---------- CHICAGO ----------
Contreras, R.H., de Kowalewski, D.G., Osella, A. "The effects of substituents on the 5J long‐range spin‐spin coupling constants in substituted benzaldehydes" . Organic Magnetic Resonance 12, no. 9 (1979) : 542-543.
http://dx.doi.org/10.1002/mrc.1270120907
---------- MLA ----------
Contreras, R.H., de Kowalewski, D.G., Osella, A. "The effects of substituents on the 5J long‐range spin‐spin coupling constants in substituted benzaldehydes" . Organic Magnetic Resonance, vol. 12, no. 9, 1979, pp. 542-543.
http://dx.doi.org/10.1002/mrc.1270120907
---------- VANCOUVER ----------
Contreras, R.H., de Kowalewski, D.G., Osella, A. The effects of substituents on the 5J long‐range spin‐spin coupling constants in substituted benzaldehydes. Magn. Reson. Chem. 1979;12(9):542-543.
http://dx.doi.org/10.1002/mrc.1270120907