Substituent and solvent effects on the proton transfer equilibrium in anils and azo derivatives of naphthol. Multinuclear NMR study and theoretical calculations
作者:Sergio H Alarcón、Alejandro C Olivieri、Dionisia Sanz、Rosa M Claramunt、José Elguero
DOI:10.1016/s0022-2860(03)00208-4
日期:2004.11
Abstract The tautomeric equilibrium due to proton transfer is compared in a series of anils of 2-hydroxynaphthalene-1-carbaldehyde and azo derivatives of 2-naphthol. Although structurally similar, these systems suffer different substituent effects on the solution-state proton transfer properties. The comparative study was performed using 1 H, 13 C and 15 N NMR spectroscopy in a variety of solvents
摘要 在一系列 2-羟基萘-1-甲醛和 2-萘酚的偶氮衍生物中比较了由质子转移引起的互变异构平衡。尽管结构相似,但这些系统对溶液状态的质子转移特性具有不同的取代基影响。比较研究是在各种溶剂中使用 1 H、 13 C 和 15 N NMR 光谱进行的。Hartree-Fock ab initio 计算涉及互变异构体的相对稳定性和基态的完整几何优化,与实验观察结果一致。