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Study of rotation barriers inN,N‐dimethylnicotinamide and quaternary salt derivatives by proton NMR. A correlation of rotation barriers ofN,N‐dimethylamides with carbon‐13 chemical shifts

 

作者: J. A. Lepoivre,   R. A. Dommisse,   F. C. Alderweireldt,  

 

期刊: Organic Magnetic Resonance  （WILEY Available online 1975）
卷期: Volume 7, issue 9  

页码: 422-425

 

ISSN:0030-4921

 

年代: 1975

 

DOI:10.1002/mrc.1270070906

 

出版商: John Wiley&Sons Limited

 

数据来源: WILEY

 

摘要:

AbstractThe rotational barrier in theN,N‐dimethylamide group is studied by proton NMR forN,N‐dimethylnicotinamide and two quaternary salts in aqueous solution. The carbon‐13 NMR spectra of a number of aromaticN,N‐dimethylamides are discussed. A roughly linear correlation is found between the ΔG≠values of the rotation barriers and the chemical shifts of the carbon atom substituted by the a

 

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