About: An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine     Goto   Sponge   NotDistinct   Permalink

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  • 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.
  • 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)
Title
  • An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine
  • An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine (en)
skos:prefLabel
  • An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine
  • An Anomalous Course of The Condensation of 1,5-Diaryl-3-formazyl glyoxylic Acids with o-Phenylenediamine (en)
skos:notation
  • RIV/61989592:15310/02:00001684!RIV/2003/MSM/153103/N
http://linked.open.../vavai/riv/strany
  • 225
http://linked.open...avai/riv/aktivita
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  • Z(MSM 153100013)
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  • 637941
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  • RIV/61989592:15310/02:00001684
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  • 1,5-diaryl-3-formazyl-glyoxylic acids (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [C3B6D51C608F]
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  • Tatranská Lomnica
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  • Bratislava
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  • 9th Blue Danube Symposium on Heterocyclic Chemistry
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  • Lemr, Karel
  • Slouka, Jan
  • Wiedermanová, Iveta
http://linked.open...vavai/riv/typAkce
http://linked.open...n/vavai/riv/zamer
number of pages
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  • Slovak Academic Press
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  • 80-227-1705-3
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  • 15310
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