Structure of aminonitrones and electronic effect of substituents on their acid-base properties

被引：2

作者：

Il'in, M. V. ^{[1
]}

Bolotin, D. S. ^{[1
]}

Demakova, M. Ya. ^{[1
]}

Avdontseva, M. S. ^{[1
]}

机构：

[1] St Petersburg State Univ, Univ Skaya Nab 7-9, St Petersburg 199034, Russia

来源：

RUSSIAN JOURNAL OF GENERAL CHEMISTRY | 2016年 / 86卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

aminonitrone; acidity constant; reaction parameter; NITRONYL NITROXIDES; ALPHA-AMINONITRONES; COMPLEXES; TAUTOMERISM;

D O I：

10.1134/S1070363216040071

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of para-substituted aromatic aminonitrones p-RC6H4C(NH2)=N+(Me)O- (R = NMe2, H, Br, Cl, CF3) have been prepared. Acidity constants of the conjugate acids RC6H4C(NH2)N+(Me)OH at 25A degrees C in a EtOH-H2O mixture (5: 95) have been determined by potentiometric titration. A linear correlation between log (k (R)/k (H)) and sigma (para) values has been revealed, and a rho(298)(sigma (para) ) parameter has been determined as of 0.635.

引用

页码：806 / 809

页数：4

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