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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Analogues of acetyl acetonate as nucleophiles & ligands

Martin, Christopher J. January 1997 (has links)
This thesis contains the synthesis of a series of novelligands that include the enantiomerically pure 2-oxazoline moiety. The thesis also considers the application of new nucleophiles for the palladium catalysed allylic substitution reaction. The synthesis of enantiomerically enriched analogues of y-amino butyric acid (GABA) is presented. The first series of ligands are designed as analogues of acetyl acetonate (acac). The ligands include the enantiomerically pure 2-oxazoline ring and a carbonyl moiety. The ligands are available in good yield in two steps. The second series of ligands include a ligating sulfur atom. The synthesis of novel oxazoline-sulfide ligands is detailed. The diastereoselective oxidation of these ligands is considered. Diastereomerically pure oxazoline-sulfoxide ligands are prepared in good yield. New nucleophiles are applied to the palladium catalysed allylic substitution reaction. The substitution products are available in good yield and with excellent stereoselectivity. The synthesis of analogues of GABA is considered. The preparation of enantiomerically enriched a-substituted-y-amino butyric acids is presented. The stereocentre is introduced in the first step of the synthesis. The analogues are subsequently isolated in good yield after six steps.
2

Электрохимические катализаторы окисления глюкозы на основе органических комплексов рутения (III) и никеля (II) : магистерская диссертация / Electrochemical catalysts for glucose oxidation based on organic complexes of ruthenium (III) and nickel (II)

Бобаренко, А. В., Bobarenko, A. V. January 2021 (has links)
В настоящей работе для электрохимического определения глюкозы предложены электрохимические катализаторы на основе органических комплексов никеля (II) и рутения (III) в присутствии карбоксилизированных многостенных углеродных нанотрубок и полиэтилеимина. Исследована каталитическая активность комплексов рутения (III) и никеля (II) при их раздельном и совместном присутствии на рабочем электроде в электрохимическом окислении глюкозы. Описан алгоритм проведения процедуры электрокаталитического определения глюкозы с использованием модифицированных электродов. Рассчитаны аналитические характеристики модифицированных электродов для электрохимического определения глюкозы. Выбран модификатор с оптимальными характеристиками, с наивысшей чувствительностью. / In this work, for the electrochemical determination of glucose, we propose electrochemical catalysts based on organic complexes of nickel (II) and ruthenium (III) in the presence of carboxylated multi-walled carbon nanotubes and polyethyleneimine. The catalytic activity of the complexes of ruthenium (III) and nickel (II) was investigated in the case of their separate and joint presence on the working electrode in the electrochemical oxidation of glucose. An algorithm for carrying out the procedure for electrocatalytic determination of glucose using modified electrodes is described. The analytical characteristics of the modified electrodes for the electrochemical determination of glucose are calculated. The selected modifier with optimal characteristics, with the highest sensitivity.

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