Autor: Fryšová, I.,Růžičková, V.; Slouka, J., and, Gucký, T.
Název práce v češtině: The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes

Studentská publikace: ne

Abstrakt česky: A series of 1,5-diaryl-3-formazylglyoxylic acids 1a-1d was prepared by azocoupling of diazonium salts of o-toluidine, m-toluidine, 2-chloroaniline, 3-chloroaniline with sodium pyruvate. These compounds gave the corresponding 1,5-diaryl-3-(2-benzimidazol-2-yl)-formazanes 2a-2d by condensation with o-phenylenediamine and corresponding dimethyl derivates 3a-3d by condensation with 4,5-dimethyl-o-phenylenediamine. Oxidative cyclization of these compounds gave 2,3-diaryl-5-(benzimidazol-2-yl)-tetrazolium chlorides, which were transformed into the less hydroscopic picrates 4a-4d and 5a-5d.

Jazyk v originále: angličtina
Název časopisu: Acta Univ. Palacki. Olomuc, Fac. Rerum Natur
Rok: 2005

Číslo časopisu v rámci uvedeného svazku: 44
Strana od-do: 55-61

Q1: ne

Způsob financování: MSM6198959216