About: The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes     Goto   Sponge   NotDistinct   Permalink

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  • Série 1,5-diaryl-3-formazylglyoxylových kyselin byla připravena kopulací diazoniových solí o-toluidinu, m-toluidinu, 2-chloroanilinu, 3-chloroanilinu s kyselinou pyrohroznovou. Kondenzací těchto kyselin s o-fenylendiaminem byla připravena série 1,5-diaryl-3-[2-(benzimidazol-2-yl)]formazanů, které byly dále redukovány na benzimidazol-2-carboxamid arylhydrazony a oxidovány na příslušné 2,3-diaryl-5-(benzimidazol-2-yl)-tetrazolium chloridy a odpovídající pikráty. (cs)
  • 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.
  • 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)
Title
  • The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes
  • Využití α-ketokarboxylových kyselin k přípravě heterocyklických sloučeninI. Syntéza a oxidativní cyklizace některých substituovaných benzimidazol-2-yl-formazanů. (cs)
  • The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes (en)
skos:prefLabel
  • The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes
  • Využití α-ketokarboxylových kyselin k přípravě heterocyklických sloučeninI. Syntéza a oxidativní cyklizace některých substituovaných benzimidazol-2-yl-formazanů. (cs)
  • The use of α-ketoacids for syntheses of heterocyclic compounds I. Synthesis and oxidative cyclization of some substituted benzimidazol-2-yl-formazanes (en)
skos:notation
  • RIV/61989592:15310/05:00002115!RIV06-MSM-15310___
http://linked.open.../vavai/riv/strany
  • 55-61
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM6198959216)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 548125
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/05:00002115
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • 1; 5-diaryl-3-formazylglyoxylic acids; 1; 2-diaminobenzene (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [CFFF96E29B11]
http://linked.open...i/riv/nazevZdroje
  • Acta Universitatis Palackianae Olomucensis, Facultas Rerum Naturalium, Chemica
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 44
http://linked.open...iv/tvurceVysledku
  • Gucký, Tomáš
  • Fryšová, Iveta
  • Slouka, Jan
  • Růžičková, Vendula
http://linked.open...n/vavai/riv/zamer
issn
  • 0232-0061
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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