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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F08%3A00020012%21RIV09-GA0-22310___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Koordinace lipofilních alkyl(pyridin-2-yl)ketoximů k Ni2+ iontům, redukce lipofilních 3-alkoxyacetofenonů tetrahydroboritanem sodným a alkalická hydrolýza 4-nitrofenyl-difenylfosfátu (PNPDPP) byly použity jako sondy při studiu faktorů ovlivňujících reaktivitu organických molekul v micelárních prostředích. Coordination of lipophilic alkyl pyridin-2-yl ketoximes 1 to Ni2+ ions, reduction of lipophilic 3-alkoxyacetophenones 2 with sodium borohydride, and alkaline hydrolysis of 4-nitrophenyl diphenyl phosphate (PNPDPP) were employed as probes in the investigation which factors may influence the reactivity of organic compounds in micellar systems. In all these reactions, a lipophilic substrate solubilized in micellar core was attacked by a hydrophilic reagent from the bulk aqueous phase. To evaluate the contribution of electrostatic interactions between the micellar surface charge and the reagent to the observed reactivity, we combined reactions involving the reagents with opposite polarity (Ni2+ cations and borohydride or hydroxide anions) with positively charged micelles of hexadecyltrimethylammonium chloride (CTAC) or bromide (CTAB) and negatively charged micelles of sodium dodecyl sulfate (SDS). Non-ionic micelles (Triton X-100 or Brij 35) served as a reference. The results of the kinetic studies give Coordination of lipophilic alkyl pyridin-2-yl ketoximes 1 to Ni2+ ions, reduction of lipophilic 3-alkoxyacetophenones 2 with sodium borohydride, and alkaline hydrolysis of 4-nitrophenyl diphenyl phosphate (PNPDPP) were employed as probes in the investigation which factors may influence the reactivity of organic compounds in micellar systems. In all these reactions, a lipophilic substrate solubilized in micellar core was attacked by a hydrophilic reagent from the bulk aqueous phase. To evaluate the contribution of electrostatic interactions between the micellar surface charge and the reagent to the observed reactivity, we combined reactions involving the reagents with opposite polarity (Ni2+ cations and borohydride or hydroxide anions) with positively charged micelles of hexadecyltrimethylammonium chloride (CTAC) or bromide (CTAB) and negatively charged micelles of sodium dodecyl sulfate (SDS). Non-ionic micelles (Triton X-100 or Brij 35) served as a reference. The results of the kinetic studies give
dcterms:title
Reactivity in micelles - are we really able to design micellar catalysts? Reaktivita v micelách - jsme skutečně schopni navrhovat micelární katalyzátory? Reactivity in micelles - are we really able to design micellar catalysts?
skos:prefLabel
Reaktivita v micelách - jsme skutečně schopni navrhovat micelární katalyzátory? Reactivity in micelles - are we really able to design micellar catalysts? Reactivity in micelles - are we really able to design micellar catalysts?
skos:notation
RIV/60461373:22310/08:00020012!RIV09-GA0-22310___
n3:aktivita
n14:P
n3:aktivity
P(GA203/04/0488)
n3:cisloPeriodika
2
n3:dodaniDat
n15:2009
n3:domaciTvurceVysledku
n5:6624707 n5:1270095 n5:8521654
n3:druhVysledku
n12:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
391546
n3:idVysledku
RIV/60461373:22310/08:00020012
n3:jazykVysledku
n18:eng
n3:klicovaSlova
cationic micelles; anionic miceles; non-ionic micelles; micellar catalysis; coordination; borohydride reduction; alkaline hydrolysis; oximes; hydrolysis; phosphates
n3:klicoveSlovo
n6:micellar%20catalysis n6:anionic%20miceles n6:hydrolysis n6:alkaline%20hydrolysis n6:borohydride%20reduction n6:non-ionic%20micelles n6:oximes n6:phosphates n6:coordination n6:cationic%20micelles
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[FC67647426BD]
n3:nazevZdroje
Collection of Czechoslovak Chemical Communications
n3:obor
n11:CC
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n17:GA203%2F04%2F0488
n3:rokUplatneniVysledku
n15:2008
n3:svazekPeriodika
73
n3:tvurceVysledku
Hampl, František Svobodová, Eva Cibulka, Radek Jurok, Radek
n3:wos
000253884000001
s:issn
0010-0765
s:numberOfPages
19
n16:organizacniJednotka
22310