Spectral and structural assignments with various N-substituted 1,2,4-triazoles: Noe difference spectroscopy as a powerful tool
作者:Wolfgang Holzer
DOI:10.1016/s0040-4020(01)80980-7
日期:1991.7
The unambiguous discrimination between signals due to H-3 and H-5 in various 1-substituted 1H-1,2,4-triazoles as well as the differentiation between isomeric 1,3-, 1,5- and 3,4-disubstituted 1,2,4-triazoles by means of NOE difference spectroscopy is described. The assignments based on NOE difference experiments are shown to agree with those resting on triazole-13C,1H spin-coupling constants.
在各种1取代的1 H -1,2,4-三唑中由H-3和H-5引起的信号之间的明确区分以及异构体1,3-,1,5-和3,4-之间的区分描述了通过NOE差光谱法的二取代的1,2,4-三唑。结果表明,基于NOE差异实验的结果与基于三唑13 C,1 H自旋耦合常数的结果一致。