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The effects of substituents on the 5J long-range spin-spin coupling constants in substituted benzaldehydes

✍ Scribed by R. H. Contreras; D. G. de Kowalewski; A. Osella

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
189 KB
Volume
12
Category
Article
ISSN
0749-1581

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✦ Synopsis

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.

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