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Showing 1 to 20 of 21 for “"Kinetic investigations"”.
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Chiral Homoenolate Synthetic Equivalents: Mechanistic, Structural, and Kinetic Investigations
… by n-BuLi/(-)-sparteine was examined kinetically by means of in situ infrared spectroscopy. The reaction is first order in allylic amine and zero-order in 1:1 base/ligand complex. When the relative concentrations of n-BuLi and (-)-sparteine are not held constant, the reaction exhibits …
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Dynamic and kinetic investigations of SEM-5/SOS peptide interactions
… into consideration several thermodynamic and kinetic aspects of the structural changes involved.\r\n\r\n
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Synthesis, characterization and kinetic investigations of heterophase materials prepared using group transfer polymerization
… and alkyl methacrylate monomers. Furthermore, kinetic studies of the GTP of MMA with a controlled temperature, "living" polymerization reactor and tetrabutylammonium benzoate as the selected catalyst were initiated. These investigations involved the determination of the reaction order with …
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Substituted 2-ethyl-7-hydroxybenzisoxazolium salts in peptide synthesis and kinetic investigations on the aminolysis of N-acylamino acid p-nitrophenyl esters with various amino acid esters.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1971. Ph.D.
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A Kinetic Study of the Oxidation of the 2, 3, and 4 Pyridine Aldehydes by Cobalt (III) Perchlorate in Aqueous Solution.
… been shown to be a powerful oxidizing agent and kinetic investigations of the mechanism of oxidation of many organic compounds including organic acids have been performed.
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Some Mechanistic Studies of Organotellurium Chemistry
… product in the equilibria is the 1:1 adduct. Kinetic investigations give an independently determined value of K2 which is in very good agreement with that obtained from the equilibrium studies...
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Lewis base catalyzed enantioselective oxysulfenylation of alkenes
… Mechanistic, X-ray crystallographic and kinetic investigations enabled a complete catalytic cycle to be formulated. The proposed cycle was supported by both kinetic data and the characterization of reaction intermediates. The turnover-limiting and enantiodetermining steps were identified …
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Novel Metal Amido-Complexes – Syntheses, Reactivity and Asymmetric Catalysis
… a dimeric species. Based on mechanistic and kinetic investigations, it was postulated that the coupling reaction is due to tautomerization yielding an enamido hydrido complex, which subsequently undergoes an intermolecular attack. This gives rise to the dimeric species with iridium mediated …
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Vibrational characterisation of coordination and biologically active compounds by means of IR absorption, Raman and surface-enhanced Raman spectroscopy in combination with theoretical simulations
… parts. The first part deals with structural investigations on different coordination compounds performed by using infrared absorption and FT-Raman spectroscopy in combination with density functional theory calculations. In the first section of this part the starting materials Ph2P-N(H)SiMe3 …
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Synthesis and reactivity of Gold(ΙΙΙ) complexes with pincer ligands
… of reactivity was not known for any other metal, kinetic investigations are presented. We show that in contrast to gold(III) hydrides, NHC supported gold(I) hydrides undergo the reverse reaction, namely oxygen insertion into the Au—H bond, giving rise to gold(I) peroxides. In the last chapter of …
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THE ACTIVATION, RECEPTOR COMPLEXING AND ENDOGENOUS REGULATION OF THE TYPE-I INTERFERON RESPONSE AS IT PERTAINS TO INNATE IMMUNITY
… of the innate immune response. First, investigations into the adjuvant potential of dsRNA reveal that a 139bp dsRNA molecule is a viable candidate for vaccine adjuvant studies. Next, structural and functional studies of TLR3 with neutralizing antibodies provide evidence for a new …
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Automated microreactor system for reaction development and online optimization of chemical processes
… and the accuracy of these reaction optimization investigations through the use of an automated microreactor system. Previous studies have illustrated the benefits of silicon microreactors for the study of chemical reactions. Such advantages include the small reactor volume and the continuous flow …
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A study of the vapour phase pyrolysis and alkaline hydrolysis of chloroform
… when a tube made from very pure silica was used. Kinetic investigations showed that the reaction was first order with respect to chloroform, and exhibited an induction period. Carrying out the reaction in a carbonised tube resulted in a faster reaction, and an increase in the induction period. To …
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Rauchgasseitige Korrosion von Nickelbasislegierungen für zukünftige 700C-Dampfkraftwerke
… and corrosive deposits like alkali sulphates. Kinetic investigations are carried out with a newly developed electrochemical pickling method, which allows to calculate the rates of hot corrosion underneath deposits. A material ranking is given for the alloys 263, 617 and 740, and it can be shown …
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Investigations on the Reaction Mechanism of Xenobiotic Reductase A
… a combination of transient and steady-state kinetics, redox potentiometry and crystal structure analysis. Thermodynamic and kinetic investigations revealed a preference of XenA for NADPH over NADH. Furthermore, the reaction catalyzed by XenA follows a ping-pong mechanism in which both …
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Influence of Iron Speciation on Redox Cycling and Reactivity With Persistent Organic Contaminants
… and monosubstituted nitrobenzenes. Detailed kinetic investigations show that the reactivity of FeII-organic complexes is significantly dependent on solution conditions (e.g., pH and [FeII]/[organic ligand] ratios). Observed reaction rate constants for contaminant reduction measured in batch …
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New Double-Responsive Micelles of Block Copolymers Based on N,N-Diethylacrylamide: Synthesis, Kinetics, Micellization, and Application as Emulsion Stabilizers
… Lewis acid in tetrahydrofuran (THF) at -78 °C. Kinetic investigations were performed using in-situ Fourier-transform Near-Infrared (FT-NIR) fiber-optic spectroscopy. This is the first mechanistic study of the anionic polymerization of a dialkylacrylamide. The polymerization follows first order …
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Thermodynamic and kinetic examinations of inorganic materials formation
… complicated interplay between thermodynamics and kinetics. Improved understanding of such factors can aid the synthesis of target materials and the discovery of new materials. Here, techniques for carrying out time-resolved studies were developed and demonstrated for the investigation of …
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Mineralized Bionanoparticle Pickering Emulsions
… cowpea plants is shortly described, too. Next, kinetic investigations of the adsorption process of the bionanoparticles at the decane/buffer solution interface were performed with pendant drop tensiometry. Interfacial pressure isotherms were recorded for BSA, HSA, fetuin-A, ferritin, CPMV and …
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Development of Thermoplastic Elastomers with Improved Elastic Properties Based on Semicrystalline Block Copolymers
… a continuous PBT hard phase. Morphological investigations reveal that this novel copoly(ether ester)s consist of a semicrystalline PBT hard phase and an amorphous soft segment phase, which is divided into a pure PEB phase, a PEO-rich phase besides a mixed PBT/PEO phase, and a pure amorphous …
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