Effect of the π-Electron Ring Current on the 1H NMR Spectra of 1,1'-Binaphthol Derivatives

1 January 1993

journal article
Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications

Vol. 58 (1) , 77-81
https://doi.org/10.1135/cccc19930077

Abstract

High resolution ¹H NMR spectra of two 1,1'-binaphthols (I, II), two 1,1'-binaphthalenediols (III, IV) and four 1,1'- binaphthalenediols acetates (IIIa - IVa) were obtained and analyzed. The effect of the ring current was evaluated by comparing the chemical shifts of the compounds, assigned through H-H COSY NMR experiments, to those of the corresponding monomers. All experimental chemicals shifts are in close agreement with the theoretical values obtained via the Bovey model for the ring current effect of a benzene moiety.

Keywords

1H NMR
RESOLUTION 1H
BINAPHTHALENEDIOLS
BINAPHTHOLS
RING CURRENT
CHEMICALS SHIFTS
NMR SPECTRA
COSY NMR
CORRESPONDING MONOMERS

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