Conformational analysis of rigid enol‐ethers by proton nuclear magnetic resonance | Zendy

Durand R. | Zendy; Geneste P. | Zendy

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Conformational analysis of rigid enol‐ethers by proton nuclear magnetic resonance

Author(s) -

Durand R.,

Geneste P.

Publication year - 1984

Publication title -

organic magnetic resonance

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0030-4921

DOI - 10.1002/mrc.1270220805

Subject(s) - enol , dihedral angle , chemistry , dipole , nuclear magnetic resonance , proton , magnetic dipole , proton magnetic moment , anisotropy , nuclear magnetic moment , chemical shift , physics , hydrogen bond , electron magnetic dipole moment , molecule , nuclear physics , organic chemistry , quantum mechanics , catalysis

Z , E isomers of rigid enol‐ethers were studied by proton nuclear magnetic resonance. As with oximes, it was found that the chemical shift difference (Δδ=δ z −δ E ) for the protons α to the function in question depends on the dihedral angle between the C α H and CC bonds. This phenomenon can be explained by an electric field effect and not by a magnetic anisotropy effect. The present study has allowed the derivation of values of the volume magnetic susceptibility and the product of b×the dipole moment for the CO bond.

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