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2014 | 19 | 1-2 | 69-77

Article title

Study of Extraction Equilibria in the Reaction of Alkaline Hydrolysis of Activated Amino Acid Esters / Badanie Równowag Ekstrakcji W Reakcji Zasadowej Hydrolizy Aktywowanych Estrów Aminokwasów


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Correlation between observed kinetic effects of phase-transfer catalytic reaction of the alkaline hydrolysis of 4-nitrophenyl ester of N-benzyloxycarbonylglycine-4 in the two-phase system chloroform-borate buffer pH = 10 and a content of ionic forms of catalyst was investigated. The phosphonium salts QX (X = Cl¯, Br¯, I¯) shows high catalytic reactivity. Dependence of the reaction kinetics discussed in the framework of the extraction mechanism with a competitive extraction of a nucleophile ОН¯, nucleofuge 4-NO2C6H4O¯ and anion X¯ of the phase-transfer catalyst.
Zbadano korelację pomiędzy obserwowanym efektem kinetycznym przejścia fazowego katalitycznej reakcji zasadowej hydrolizy estru 4-nitrofenylowego N-benzyloksycarbonylglycyny-4 w dwufazowym układzie chloroform-bufor boranowy, pH = 10, z zawartością jonowych form katalizatora. Sole fosfoniowe QX (X = Cl¯, Br¯, I¯) wykazują wysoką aktywność katalityczną. Zależności kinetyki reakcji przeanalizowano w ramach mechanizmu ekstrakcji z konkurencyjną ekstrakcją nukleofilu ОН¯, grupą odchodzącą 4-NO2C6H4O¯ i anionem X¯ katalizatora przejścia fazowego.









Physical description


1 - 12 - 2014
6 - 2 - 2015


  • Chemical Department, Donetsk National University, ul. Shorsa 17a, Donetsk, 83001, Ukraine, phone +380633059979
  • Chemical Department, Donetsk National University, ul. Shorsa 17a, Donetsk, 83001, Ukraine, phone +380633059979
  • Chemical Department, Donetsk National University, ul. Shorsa 17a, Donetsk, 83001, Ukraine, phone +380633059979
  • Donetsk Institute of Physics and Engineering, NASU, Donetsk, 83114, Ukraine
  • Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, Russia
  • Universidade Nova de Lisboa, Portugal, 2829-516 Caparica Ext.: 12201/3/4/5
  • Universidade Nova de Lisboa, Portugal, 2829-516 Caparica Ext.: 12201/3/4/5


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