About: New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Preparation of some pyridazinium salts using azo coupling reaction of enaminones with 4-subst. benzenediazonium tetrafluoroborates was published in paper1. 4-Subst. benzenediazonium hexa-fluorophosphates2 gave also pyridazinium salts even at higher yields under analogous reaction conditions. In order to synthesize these salts with different anions, we prepared 4-methoxy-benzenediazonium tetraphenylborane. Azo coupling reaction of this diazonium salt with 1-phenyl-3-methylaminobut-2-en-1-one gave compound 1 as the major product. The structure of prepared boroxazine 1 was studied using X-ray diffraction and multinuclear magnetic resonance At present, we are studying reaction mechanism of boroxazine heterocycles formation. Preparation of some pyridazinium salts using azo coupling reaction of enaminones with 4-subst. benzenediazonium tetrafluoroborates was published in paper1. 4-Subst. benzenediazonium hexa-fluorophosphates2 gave also pyridazinium salts even at higher yields under analogous reaction conditions. In order to synthesize these salts with different anions, we prepared 4-methoxy-benzenediazonium tetraphenylborane. Azo coupling reaction of this diazonium salt with 1-phenyl-3-methylaminobut-2-en-1-one gave compound 1 as the major product. The structure of prepared boroxazine 1 was studied using X-ray diffraction and multinuclear magnetic resonance At present, we are studying reaction mechanism of boroxazine heterocycles formation. (en) V práci1 byla publikována příprava pyridaziniových solí azokopulační reakcí enaminonů se -subst.benzendiazonium-tetrafluoorboráty. Analogií jsou reakce se 4-subst.benzendiazonium-hexafluorofosfáty,2 které poskytují rovněž pyridaziniové soli, avšak ve vyšších výtěžcích. Ve snaze o přípravu těchto solí s různými anionty jsme připravili i 4-methoxybenzendiazonium-tetrafenylborát. Azokopulační reakcí této diazoniové soli s 1-fenyl-3-methylaminobut-2-en-1-onem však vzniká jako majoritní složka produkt 1. Struktura připravených boroxazinů byla zkoumána pomocí multinukleární magnetické rezonance a rentgenostrukturní analýzy. V současné době se zabýváme i otázkou mechanismu vzniku těchto boroxazinovým heterocyklů. (cs)
Title	New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines (en) Nová cesta přípravy 5-aryldiazenyl-2,1,3-boroxazinů (cs)
skos:prefLabel	New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines (en) Nová cesta přípravy 5-aryldiazenyl-2,1,3-boroxazinů (cs)
skos:notation	RIV/00216275:25310/05:00002989!RIV06-GA0-25310___
http://linked.open.../vavai/riv/strany	173
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/03/0356), Z(MSM0021627501)
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Šimůnek, Petr Macháček, Vladimír
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	532713
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/05:00002989
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Enaminones; diazonium tetraphenylborates; boroxazines; azo coupling; NMR; X-ray. (en)
http://linked.open.../riv/klicoveSlovo	azo coupling NMR Enaminones X-ray. boroxazines diazonium tetraphenylborates
http://linked.open...ontrolniKodProRIV	[D3EFE6C818ED]
http://linked.open...v/mistoKonaniAkce	Helsinki
http://linked.open...i/riv/mistoVydani	Helsinky (Finland)
http://linked.open...i/riv/nazevZdroje	14th European Symposium on Organic Chemistry
http://linked.open...in/vavai/riv/obor	CC
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Tautomerism and hydrogen bonding in beta-eneminone derivatives. Multinuclear and X-ray study
http://linked.open...UplatneniVysledku	2005
http://linked.open...iv/tvurceVysledku	Šimůnek, Petr Lyčka, Antonín Macháček, Vladimír Bertolasi, Valerio Pešková, Markéta
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2005-07-04 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Aimed preparation of special compounds and materials and investigation of their physical and chemical properties and supramolecular structures
number of pages	1 (xsd:int)
http://purl.org/ne...btex#hasPublisher	University of Helsinki
https://schema.org/isbn	952-10-2553-0
http://localhost/t...ganizacniJednotka	25310
is http://linked.open...avai/riv/vysledek of	New method of preparation of 5-aryldiazenyl-2,1,3-boroxazines

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