作者:B. V. Chernitsa、A. Yu. Ershov、V. A. Doroshenko、S. I. Yakimovich、I. V. Lagoda、I. V. Zerova、V. V. Pakal’nis、V. V. Shamanin
DOI:10.1007/s10593-010-0638-3
日期:2010.12
It has been shown by 1H NMR spectroscopy that 2-mercaptobenzoylhydrazones of aromatic aldehydes 2-HSC6H4CONHN=CHC6H4X (X = 4-NO2, 3-NO2, 4-Br, H, 4-Me, 4-MeO, 4-Me2N) exist in DMSO-d6 solution as tautomeric mixtures of linear and cyclic benzo-1,3,4-thiadiazepine forms. The linear hydrazone form is represented by (E,Z′)-conformational isomers, differing in the disposition relative to the amide C–N bond
它已被示出1个H NMR光谱的是芳族醛的2- mercaptobenzoylhydrazones 2-HSC 6 ħ 4 CONHN = CHC 6 H ^ 4 X(X = 4-NO 2,3-NO 2,4-BR,H,4- Me,4-MeO,4-Me 2 N)以线性和环状苯并-1,3,4-噻二氮杂形式的互变异构混合物形式存在于DMSO-d 6溶液中。线性形式由(E,Z ')-构象异构体表示,相对于酰胺C–N键的位置不同。结果表明,互变异构平衡常数K T的对数 与芳核中取代基的σ-常数相关。