. . . "An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine" . "290"^^ . . "15310" . "Lemr, Karel" . "An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine"@en . . "An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine"@en . . "3"^^ . . "0"^^ . "RIV/61989592:15310/02:00001684" . . "0"^^ . "9th Blue Danube Symposium on Heterocyclic Chemistry" . . "3"^^ . . "Bratislava" . . "Z(MSM 153100013)" . . . "[C3B6D51C608F]" . "An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine" . . "A condensation of 1,5-diaryl-3-formazyl-glyoxylic acids with o-phenylenediamine did not afford 1,2-dihydro-3-(1,5-diaryl-3-formazyl)-quinoxaline-2-ones, but 1,5-diaryl-3-(2-benzimidazol-2-yl)-formazanes with simultaneous elimination of formic acid. Formazanes were transformed by reductive splitting to benzimidazole-2-carboxamide arylhydrazones. Oxidative cyclization of mentioned formazans tetrazolium salts were prepared." . "Tatransk\u00E1 Lomnica" . "225" . "637941" . "80-227-1705-3" . "Slouka, Jan" . "1,5-diaryl-3-formazyl-glyoxylic acids"@en . "A condensation of 1,5-diaryl-3-formazyl-glyoxylic acids with o-phenylenediamine did not afford 1,2-dihydro-3-(1,5-diaryl-3-formazyl)-quinoxaline-2-ones, but 1,5-diaryl-3-(2-benzimidazol-2-yl)-formazanes with simultaneous elimination of formic acid. Formazanes were transformed by reductive splitting to benzimidazole-2-carboxamide arylhydrazones. Oxidative cyclization of mentioned formazans tetrazolium salts were prepared."@en . "Slovak Academic Press" . "Wiedermanov\u00E1, Iveta" . "RIV/61989592:15310/02:00001684!RIV/2003/MSM/153103/N" . . . .