Investigation of the amide rotation inN,N-dialkylbenzamides. 7-Re-examination of the role of the hydrogen bond in 2-mercapto substituted derivatives
作者:Adam Gryff-Keller、Przemysław Szczeciński
DOI:10.1002/mrc.1260230811
日期:1985.8
Barriers to the amide rotation in 2‐mercapto‐N,N‐dialkylbenzamides [alkyl = CH3 or CH(CH3)2] and some of their derivatives were measured by dynamic 1H NMR. For N,N‐diisopropylamides, barriers to rotation about the carbonyl–aryl bond were also determined. The results show that the intramolecular hydrogen bond has only a very small influence on the measured barriers. In contrast to the literature data
2-巯基-N,N-二烷基苯甲酰胺 [烷基 = CH3 或 CH(CH3)2] 及其一些衍生物中酰胺旋转的障碍通过动态 1 H NMR 测量。对于 N,N-二异丙基酰胺,还确定了围绕羰基-芳基键旋转的障碍。结果表明,分子内氢键对测量的势垒只有很小的影响。与文献数据相反,仅观察到一组信号,对于所有可能的 2-巯基-N,N-二甲基苯甲酰胺形式都是通用的。