Enhanced long-range coupling constants in cyclic systems
- 1 January 1967
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society B: Physical Organic
- p. 712-716
- https://doi.org/10.1039/j29670000712
Abstract
Long-range couplings in the 1,3-dioxan series are reported. A clear demonstration of these couplings is given by preparing symmetrical and unsymmetrical spiro-analogues of the dioxans, to render magnetically identical protons non-identical. Coupling constants found are unusually large for saturated, unstrained systems, and a possible effect of the electronegativity of substituents is discussed.Keywords
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