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Investigations on N , N ‐dialkylbenzamides by NMR spectroscopy: 5 —Analysis of static and dynamic proton NMR spectra of 2‐fluoro‐ and 2,6‐difluoro‐ N , N ‐dimethyl‐ and N , N ‐diethyl‐benzamides
Author(s) -
Dürst Thomas,
GryffKeller Adam,
Terpiński Jacek
Publication year - 1983
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/omr.1270211103
Subject(s) - chemistry , proton , fluorine 19 nmr , nuclear magnetic resonance spectroscopy , amide , carbon 13 nmr satellite , spectral line , nmr spectra database , proton nmr , ring (chemistry) , spectroscopy , two dimensional nuclear magnetic resonance spectroscopy , computational chemistry , crystallography , stereochemistry , organic chemistry , physics , nuclear physics , quantum mechanics , astronomy
The analysis of static and dynamic proton NMR spectra of 2‐fluoro‐ and 2,6‐difluoro‐ N , N ‐dimethyl‐ and N , N ‐diethyl‐benzamides at various temperatures has been carried out. The conformations of the compounds have been deduced on the basis of long‐range through‐space proton‐fluorine couplings. Free energies of activation of amide rotation have been determined for all compounds, and of carbonyl‐ring rotation for one compound.