Hydrolysis of carboxylate and phosphate esters using monopyridinium oximes in cationic micellar media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG44__%2F11%3A00002475" target="_blank" >RIV/60162694:G44__/11:00002475 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/kin.20590" target="_blank" >http://dx.doi.org/10.1002/kin.20590</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Hydrolysis of carboxylate and phosphate esters using monopyridinium oximes in cationic micellar media

Popis výsledku v původním jazyce

The reactions of p-nitrophenyl acetate (PNPA) with a series of monopyridinium oximes, viz. 2-PAM (2-hydroxyiminomethyl-1-methylpyridinium iodide), 3-PAM (3-hydroxyiminomethyl-1-methylpyridinium iodide), and 4-PAM (4-hydroxyiminomethyl-1-methylpyridiniumiodide) have been studied in the presence of cationic surfactants of same hydrophobic chain length (C(16)) within the concentration range of 0.5-6.0 mM at pH 8.0 under the pseudo-first-order condition. The observed rate constant (k(obs)) increases with increasing surfactant concentration culminating into a maximum, and this has been analyzed in detail following the concepts of micellar catalysis. The structure-activity relationship of the investigated oximes has been discussed, and 2-PAM was found to bethe most reactive among all the three investigated oximes for the cleavage of PNPA. Esterolytic decomposition of p-nitrophenyldiphenyl phosphate with oximate ions (-CH=NO(-)) was followed in cetyltrimethylammonium bromide micelles at pH

Název v anglickém jazyce

Hydrolysis of carboxylate and phosphate esters using monopyridinium oximes in cationic micellar media

Popis výsledku anglicky

The reactions of p-nitrophenyl acetate (PNPA) with a series of monopyridinium oximes, viz. 2-PAM (2-hydroxyiminomethyl-1-methylpyridinium iodide), 3-PAM (3-hydroxyiminomethyl-1-methylpyridinium iodide), and 4-PAM (4-hydroxyiminomethyl-1-methylpyridiniumiodide) have been studied in the presence of cationic surfactants of same hydrophobic chain length (C(16)) within the concentration range of 0.5-6.0 mM at pH 8.0 under the pseudo-first-order condition. The observed rate constant (k(obs)) increases with increasing surfactant concentration culminating into a maximum, and this has been analyzed in detail following the concepts of micellar catalysis. The structure-activity relationship of the investigated oximes has been discussed, and 2-PAM was found to bethe most reactive among all the three investigated oximes for the cleavage of PNPA. Esterolytic decomposition of p-nitrophenyldiphenyl phosphate with oximate ions (-CH=NO(-)) was followed in cetyltrimethylammonium bromide micelles at pH

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/OVUOFVZ200803" target="_blank" >OVUOFVZ200803: SUBSTANCE - Vývoj nového činidla pro dekontaminaci a dezinfekci kůže na bázi micelárních substancí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Chemical Kinetics

ISSN

0538-8066

e-ISSN

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Svazek periodika

43

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

569-578

Kód UT WoS článku

000294225300006

EID výsledku v databázi Scopus

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