Synthesis of 5-azolyl-2,4-dihydro-3H-1,2,4-triazole-3-thiones and 5-azolyl-1,3,4-thiadiazol-2-amines based on derivatives of 5-arylisoxazole-3-carboxylic and 4,5-dichloroisothiazole-3-carboxylic acids
作者:Sergey K. Petkevich、Neliya А. Zhukovskaya、Evgenij А. Dikusar、Ekaterina А. Akishina、Peter V. Kurman、Eugeniya V. Nikitina、Vladimir P. Zaytsev、Vladimir I. Potkin
DOI:10.1007/s10593-021-02948-w
日期:2021.5
5-arylisoxazole- and 4,5-dichloroisothiazole-3-carboxylic acids and their derivatives. The amino group of 5-(4,5-dichloroisothiazol-3-yl)-1,3,4-thiadiazol-2-amine was acylated with 5-phenylisoxazole-3-carboxylic acid chloride. Simple approaches to the preparation of previously unknown heterocyclic assemblies containing two or three azole rings with a high potential for biological activity are described.
the presence of hydrochloric acid. In this reaction, nitroacetonitrile is formed as an intermediate active species, which serves as a synthetic equivalent of cyanonitrile oxide that can participate in a 1,3-dipolarcycloaddition reaction.
Synthesis of hydroxybenzaldehyde derivatives containing an isoxazole heteroring
作者:V. I. Potkin、R. A. Gadzhily、E. A. Dikusar、S. K. Petkevich、N. A. Zhukovskaya、A. G. Aliev、Sh. F. Nagieva
DOI:10.1134/s1070428012010216
日期:2012.1
3-hydroxyiminomethyl-5-phenyl(p-tolyl)isoxazoles, and their reactions with p-hydroxybenzaldehyde, vanillin, isovanillin, o-vanillin, and ethyl vanillin gave the corresponding esters. The latter were brought into condensation with aromatic amines to obtain Schiff bases which were reduced to amines.