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The proton resonance spectra of heterocycles—VI: The correlation of substituent effects on chemical shifts in bicyclic compounds

✍ Scribed by A. R. Katritzky; Y. Takeuchi; B. Ternai; G. J. T. Tiddy

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
477 KB
Volume
2
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The proton chemical shifts are reported for monosubstituted naphthalenes, quinolines and quinoxalines. Together with literature data, these chemical shifts are compared with the parent compounds and substituent effects evaluated statistically. The effect of substituents parallels that in benzenes, but is modified by bond fixation, steric hindrance and other effects which can, at least qualitatively be understood. The treatment enables estimation of likely chemical shifts for ABC spectra in fused aromatic systems which should facilitate the solution of such spectra.

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