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Determination of the stereochemistry of disubstituted fluoroethylenes by 13 C NMR spectroscopy
Author(s) -
Bosch M. P.,
Camps F.,
Fabriàs G.,
Guerrero A.
Publication year - 1987
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260250415
Subject(s) - chemistry , protonation , coupling constant , nuclear magnetic resonance spectroscopy , fluorine 19 nmr , fluorine , stereochemistry , spectroscopy , carbon 13 nmr , carbon 13 nmr satellite , computational chemistry , organic chemistry , ion , particle physics , quantum mechanics , physics
The stereochemistry of 1,2‐disubstituted fluoroethylenes, of general formula R S H 2 CHCFR′, has been ascertained from the different magnitudes of the upfield shift effect promoted by fluorine on the 13 C NMR absorptions of the underlined γ‐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 2 J (CF) and 3 J (CF) coupling constants in the two isomers.