¹³C nuclear magnetic resonance spectra of methoxycyclohexane derivatives. Rotamer populations about C–OMe bonds as indicated by¹³C chemical shifts of methoxy- and ring-carbons and³J_C,Hcoupling constants

1 January 1981

journal article
research article
Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1

p. 1671-1678
https://doi.org/10.1039/p19810001671

Abstract

Methoxy ¹³C chemical shifts in methoxycyclohexane derivatives may be rationalized in terms of rotamer populations about the C–OMe bond and δ₁-effects caused by steric interaction of the methoxy-group with substituents at the neighbouring 2- and 6-positions. Information on rotamer populations is obtained also from the ¹³C chemical shifts of C-2 and C-6, and from the three-bond coupling between the proton at C-1 and the methoxy-carbon atom.

Keywords

CHEMICAL SHIFT
NUCLEAR MAGNETIC RESONANCE
COUPLING CONSTANT

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13C nuclear magnetic resonance spectra of methoxycyclohexane derivatives. Rotamer populations about C–OMe bonds as indicated by13C chemical shifts of methoxy- and ring-carbons and3JC,Hcoupling constants

Abstract

Keywords

¹³C nuclear magnetic resonance spectra of methoxycyclohexane derivatives. Rotamer populations about C–OMe bonds as indicated by¹³C chemical shifts of methoxy- and ring-carbons and³J_C,Hcoupling constants