About: The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization

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About: The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A series of 1,5-diaryl-3-formazylglyoxylic acids 1a-1f was prepared by azocoupling of diazonium salts with sodium pyruvate. These compounds gave the corresponding 3-(1,5-diaryl-3-formazyl)-1,2-dihydroquinoxaline-2-ones 2a-2f by condensation with o-phenylenediamine. Oxidative cyclization of these compounds did not lead to the [1,2,3]triazolo[1,5-a]quinoxaline derivatives 6a-6f, but to the isomeric 2,3-diaryl-5-(2-oxo-1,2-dihydroquinoxaline-3-yl)-tetrazolium chlorides 3a-3f, which were transformed into the less hygroscopic picrates 4a-4f. A series of 1,5-diaryl-3-formazylglyoxylic acids 1a-1f was prepared by azocoupling of diazonium salts with sodium pyruvate. These compounds gave the corresponding 3-(1,5-diaryl-3-formazyl)-1,2-dihydroquinoxaline-2-ones 2a-2f by condensation with o-phenylenediamine. Oxidative cyclization of these compounds did not lead to the [1,2,3]triazolo[1,5-a]quinoxaline derivatives 6a-6f, but to the isomeric 2,3-diaryl-5-(2-oxo-1,2-dihydroquinoxaline-3-yl)-tetrazolium chlorides 3a-3f, which were transformed into the less hygroscopic picrates 4a-4f. (en)
Title	The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization (en)
skos:prefLabel	The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization The use of arylhydrazonoalkyl-pyridinium salts for synthesis of some formazans of quinoxaline group and the studies of their oxidative cyclization (en)
skos:notation	RIV/61989592:15310/01:00001390!RIV/2002/MSM/153102/N
http://linked.open.../vavai/riv/strany	55-60
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 153100008), Z(MSM 153100013)
http://linked.open...iv/cisloPeriodika	N
http://linked.open...vai/riv/dodaniDat	2002
http://linked.open...aciTvurceVysledku	Fryšová, Iveta Slouka, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	699743
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/01:00001390
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	The use of arylhydrazonoalkyl-pyridinium salts (en)
http://linked.open.../riv/klicoveSlovo	The use of arylhydrazonoalkyl-pyridinium salts
http://linked.open...odStatuVydavatele	IL - Stát Izrael
http://linked.open...ontrolniKodProRIV	[F2ECD41C1D35]
http://linked.open...i/riv/nazevZdroje	Heterocyclic Communications
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...UplatneniVysledku	2001
http://linked.open...v/svazekPeriodika	7
http://linked.open...iv/tvurceVysledku	Slouka, Jan Wiedermanová, Yveta
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20153100008 http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20153100013
issn	0793-0283
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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