Substituent effects on the isomerization of hydrazone switches driven by the intramolecular hydrogen bond
作者:Chaocao Lu、Bu Htan、Shitao Fu、Chunmiao Ma、Quan Gan
DOI:10.1016/j.tet.2019.06.022
日期:2019.7
In this work, the substituent effects on hydrogen bonding in one kind of hydrazone-based switch are revealed. The E/Z isomerization ratios of these hydrazones and their intramolecular hydrogen bond strengths in the Z form were evaluated using NMR technique. Linear correlations between these parameters and Hammett empirical values for substituent effects are explored as well.
在这项工作中,揭示了一种基开关中取代基对氢键的影响。使用NMR技术评估这些的E / Z异构化比例及其在Z形式下的分子内氢键强度。还探讨了这些参数与Hammett经验值之间关于取代基效应的线性相关性。