Sodium-ion-induced 1H-nmr shifts in the assignment of structure to r-2-ethyl-5-methyl-c-and-t-5-(2-methylbenzyloxy)-1, 3-dioxane

EJT Chrystal, AH Haines, R Patel

Index: Chrystal, Ewan J. T.; Haines, Alan H.; Patel, Rajnikant Carbohydrate Research, 1989 , vol. 186, p. 320 - 325

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Citation Number: 2

Abstract

Assignment of configuration at a tertiary centre in an organic molecule is often difficult. There are no vicinal proton-proton couplings and often the most useful type of information, particularly in cyclic compounds, is based on 'XI chemical shift data'.'or-i./c,, coupling”. The interaction of sodium ions with certain polyoxygenated compounds may induce4 changes in the chemical shifts of the resonances of particular protons, and the signals which have the ...