Dependence of the furan-2-carbaldehyde conformational equilibrium on solvent dielectric constant: direct evidence from pulsed (Fourier transform) nuclear magnetic resonance
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 4,p. 451-452
- https://doi.org/10.1039/p29760000451
Abstract
Low temperature pulsed (Fourier transform) n.m.r. measurements on very dilute solutions of furan-2-carbaldehyde in trichlorofluoromethane and carbon disulphide, and on a concentrated solution in deuteriodichloromethane, demonstrate the sensitivity to changes in solution dielectric constant of the position of the conformational equilibrium between syn- and anti-forms. A previous estimate of the position of the equilibrium in non-polar solvents is close to the results found in the present study.Keywords
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