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Determination of the stereochemistry of disubstituted fluoroethylenes by 13C NMR spectroscopy

✍ Scribed by M. P. Bosch; F. Camps; G. Fabriàs; A. Guerrero

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
335 KB
Volume
25
Category
Article
ISSN
0749-1581

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✦ Synopsis

The stereochemistry of 1,Z-disubstituted fluoroethylenes, of general formula RCH,CH=CFR', has been ascertained from the different magnitudes of the upfield shift effect promoted by fluorine on the "C NMR absorptions of the underlined y-carbon of the fluorinated analogue in comparison with those of the protonated parent compounds. Likewise, this assignment was also possible from the study of the values of the 'J(CF) and 3J(CF) coupling constants in the two isomers.

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