About: Resolution of a configurationally stable [5]helquat. enantiocomposition analysis of a helicene congener by capillary electrophoresis

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Racemic [5]helquat as a triflate salt has been synthesized using a robust, three-step procedure. Subsequent exchange of triflate anions for inexpensive (R,R)-dibenzoyltartrate anions via an ion exchange resin afforded two diastereoisomeric salts. Crystallization led to the resolution of the helquat (ee > 98%). This is the first time that a non-racemic helquat has been obtained; its helicity having been assigned and its racemization barrier determined. Capillary electrophoresis with a sulfated β-cyclodextrin chiral selector is introduced for the first time as a straightforward method to analyze the enantiocomposition of charged, helicene-like species. Racemic [5]helquat as a triflate salt has been synthesized using a robust, three-step procedure. Subsequent exchange of triflate anions for inexpensive (R,R)-dibenzoyltartrate anions via an ion exchange resin afforded two diastereoisomeric salts. Crystallization led to the resolution of the helquat (ee > 98%). This is the first time that a non-racemic helquat has been obtained; its helicity having been assigned and its racemization barrier determined. Capillary electrophoresis with a sulfated β-cyclodextrin chiral selector is introduced for the first time as a straightforward method to analyze the enantiocomposition of charged, helicene-like species. (en)
Title	Resolution of a configurationally stable [5]helquat. enantiocomposition analysis of a helicene congener by capillary electrophoresis Resolution of a configurationally stable [5]helquat. enantiocomposition analysis of a helicene congener by capillary electrophoresis (en)
skos:prefLabel	Resolution of a configurationally stable [5]helquat. enantiocomposition analysis of a helicene congener by capillary electrophoresis Resolution of a configurationally stable [5]helquat. enantiocomposition analysis of a helicene congener by capillary electrophoresis (en)
skos:notation	RIV/61388963:_____/10:00345961!RIV11-GA0-61388963
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/08/1428), P(GA203/09/0705), P(GA203/09/1614), P(GAP207/10/2391), Z(AV0Z40550506), Z(MSM6046137307)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Severa, Lukáš Koval, Dušan Teplý, Filip Kašička, Václav Šaman, David Sázelová, Petra
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	Ústav organické chemie a biochemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	285004
http://linked.open...ai/riv/idVysledku	RIV/61388963:_____/10:00345961
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	[5]helquat; capillary electrophoresis; resolution via diastereoisomers (en)
http://linked.open.../riv/klicoveSlovo	capillary electrophoresis [5]helquat resolution via diastereoisomers
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[355D7FCD908C]
http://linked.open...i/riv/nazevZdroje	New Journal of Chemistry
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Transfer of charge in single and assembled molecules Capillary electrophoresis with multidimensinal detection and its application to separation and characterization of biopolymers Synthesis of N-Heteroaromatic Cations via Transition Metal Catalysis Synthesis of Helquats and their Organocatalytic Applications
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Kašička, Václav Koval, Dušan Novotná, P. Severa, Lukáš Teplý, Filip Šaman, David Urbanová, M. Slavíček, P. Sázelová, Petra Ončák, M.
http://linked.open...ain/vavai/riv/wos	000278275700004
http://linked.open...n/vavai/riv/zamer	Regulace biologických procesů: Chemické modulátory vybraných systémů významných pro medicínu a zemědělství Physico-chemical methods of analysis and characterization of chemical systems and biosystems
issn	1144-0546
number of pages	5 (xsd:int)

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