"S\u00E9rie 1,5-diaryl-3-formazylglyoxylov\u00FDch kyselin byla p\u0159ipravena kopulac\u00ED diazoniov\u00FDch sol\u00ED o-toluidinu, m-toluidinu, 2-chloroanilinu, 3-chloroanilinu s kyselinou pyrohroznovou. Kondenzac\u00ED t\u011Bchto kyselin s o-fenylendiaminem byla p\u0159ipravena s\u00E9rie 1,5-diaryl-3-[2-(benzimidazol-2-yl)]formazan\u016F, kter\u00E9 byly d\u00E1le redukov\u00E1ny na benzimidazol-2-carboxamid arylhydrazony a oxidov\u00E1ny na p\u0159\u00EDslu\u0161n\u00E9 2,3-diaryl-5-(benzimidazol-2-yl)-tetrazolium chloridy a odpov\u00EDdaj\u00EDc\u00ED pikr\u00E1ty."@cs . "Fry\u0161ov\u00E1, Iveta" . "15310" . "CZ - \u010Cesk\u00E1 republika" . "1; 5-diaryl-3-formazylglyoxylic acids; 1; 2-diaminobenzene"@en . "The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes"@en . . . . "548125" . "Z(MSM6198959216)" . . "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."@en . . "[CFFF96E29B11]" . . "The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes"@en . . "1" . "55-61" . "R\u016F\u017Ei\u010Dkov\u00E1, Vendula" . "0232-0061" . . . . "The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes" . . "Slouka, Jan" . "The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes" . "44" . "Vyu\u017Eit\u00ED α-ketokarboxylov\u00FDch kyselin k p\u0159\u00EDprav\u011B heterocyklick\u00FDch slou\u010DeninI. Synt\u00E9za a oxidativn\u00ED cyklizace n\u011Bkter\u00FDch substituovan\u00FDch benzimidazol-2-yl-formazan\u016F."@cs . "Vyu\u017Eit\u00ED α-ketokarboxylov\u00FDch kyselin k p\u0159\u00EDprav\u011B heterocyklick\u00FDch slou\u010DeninI. Synt\u00E9za a oxidativn\u00ED cyklizace n\u011Bkter\u00FDch substituovan\u00FDch benzimidazol-2-yl-formazan\u016F."@cs . . . "RIV/61989592:15310/05:00002115" . "RIV/61989592:15310/05:00002115!RIV06-MSM-15310___" . "Guck\u00FD, Tom\u00E1\u0161" . . "7"^^ . "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." . . "4"^^ . . "Acta Universitatis Palackianae Olomucensis, Facultas Rerum Naturalium, Chemica" . . "3"^^ .