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N ‐Alkenyl amide rotational barriers by 2D EXSY NMR
Author(s) -
Aguirre Gerardo,
Somanathan Ratnasamy,
Hellberg Lars H.,
Dwyer Tammy J.,
North Robert
Publication year - 2003
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.1142
Subject(s) - chemistry , two dimensional nuclear magnetic resonance spectroscopy , amide , nuclear magnetic resonance spectroscopy , conjugated system , crystallography , stereochemistry , organic chemistry , polymer
The rotational barriers of some N ‐alkenylamides were measured by 2D exchange spectroscopy (2D EXSY) NMR techniques. It was found that the conjugated double bond lowers E , Z barriers by 2.6 kJ mol −1 . Copyright © 2003 John Wiley & Sons, Ltd.