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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"benzyl alcohol"”.
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The Effects of Benzyl Alcohol on Developing Zebrafish (Danio rerio)
Benzyl alcohol (C6H5CH2OH) is a preservative used in IV preparations, cosmetics, hair dyes, perfumes, and soaps. It is also used as a solvent for many organic processes and in industrial applications. It is an organic compound whose polarity and low vapor pressure make it a useful industrial …
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Understanding the promotion of aerobic oxidation of benzyl alcohol over Pt-based catalysts
… the existing methodologies for the oxidation of alcohol substrates to aldehydes, ketones and/or carboxylic acid products. However, a potential risk is apparent upon the use of volatile and flammable organic solvents, specifically in the presence of molecular oxygen. This makes the liquid-phase …
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The photo-oxidation of benzyl alcohol over TiO2 and Pt TiO2 and the effect of reaction conditions
… is commonly produced by the oxidation of benzyl alcohol (B-Alc) using stoichiometric amounts of hazardous oxidants such as chromates. The selective, photocatalytic oxidation of benzyl alcohol offers a promising, more environmentally friendly method of producing benzaldehyde. In this work, …
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Studies on the oxidative degradation of fluphenazine decanoate in oily solution
… to be related to the pKa value of the acid. Benzyl alcohol is commonly added as a preservative to oily formulations and thus the effect of this material on the rate of fluphenazine decanoate oxidation was investigated. Evidence for the enhanced oxidation of the drug in the presence of benzyl …
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[Ru-POM] Photo-electrocatalysis
… thesis, remediation of organic solvent, such as benzyl alcohol and toluene, and a number of key processes that influence the overall output from photocatalytic thin films were optimized. These steps included; (1) the extent to which the catalyst and sensitizer interact electronically, (2) the …
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Oxidation of Organic Compounds in Molten Salts
… any violent reactions. Ethanol, 2-propanol, benzyl alcohol, and benzaldehyde were oxidized by Mn(VI) and Mn(VII); toluene was only oxidized by Mn(VII), and n-hexane, cyclohexane, and ethene were unchanged by both Mn(VI) and Mn(VII). Detailed experiments have been performed on the reactions of …
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Synthesis of Heterometallic nitridoruthenium(VI) Complexes With Nickel, Palladium, or Platinum: New Catalysts for the Aerobic Oxidation of Alcohols
… as a catalytic aerobic oxidant of organic alcohols is explored. The complex [PPh4][Ru(N)Me2(mu2 -O)2Pd((-)-sparteine)] oxidizes aryl and allyl alcohols to their corresponding aldehydes. The complex also catalytically rearranges allylic alcohols to their corresponding unsaturated aldehydes. …
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Effect of Drugs on Rabbit Retina
… only in combination with the preservative benzyl alcohol, and is not approved for intraocular use. Triamcinolone has been and is extensively used off-label for injections into the vitreous body. Intravitreal injection of triamcinolone and benzyl alcohol, separately and in combination, …
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Preparation, Characterization and Toxicity Evaluation of a Novel Sustained Release Delivery System for a Hydrogen Sulfide Donor - GYY 4137
… 10% w/v poly (lactic-co-glycolic acid) in benzyl benzoate and benzyl alcohol (3:7). The formulation was prepared by dispersing model H2S donor, GYY 4137, into polymer solution. The formulation rapidly formed an in situ gel upon injecting in simulated tear fluid. Compared to aqueous GYY 4137 …
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Asymmetric Transfer Hydrogenation of Secondary Allylic Alcohols
… method that transforms racemic secondary allylic alcohols into optically active secondary alcohols. The key step in this methodology occurs through a ruthenium catalyzed tandem isomerization and asymmetric transfer hydrogenation reaction. This reaction is a one pot, two-step process, which …
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Nichtwässrige Synthese und Bildungsmechanismus von Übergangsmetalloxid-Nanopartikeln = Nonaqueous synthesis of transition-metal oxide nanoparticles and their formation mechanism
… particles about 6 nm in size resulted in benzyl alcohol, whereas larger particles could be obtained in ketones such as acetone or acetophenone. In benzyl alcohol, a novel mechanism was found to lead to BaTiO3, involving a C–C coupling step between the isopropoxide ligand and the benzylic …
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The yeast mediated synthesis of the l-ephedrine precursor, l-phenylacetylcarbinol, in an organic solvent
… suffers from the drawback that two by-products, benzyl alcohol and l-phenylpropan-l,2-diol are always formed. The study aims to improve the efficiency of the l-PAC formation by performing the reaction with dried yeast in an organic solvent.
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Synthesis and characterisation of branched poly(ethylene terephthalate)s
… of branching with end-capping agents, such as benzyl alcohol. The polymers synthesised were then characterised by solution viscosity, end-group analysis, DSC analysis, theological analysis and light scattering. Extensive branching of polymers has been observed and controlled via end-capping …
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High oxidation state organometallic and coordination chemistry: The synthesis and reactivity of nitridoosmium(VI) thiolates and alkoxides
… Thermolysis of the tetrathiolate forms benzyl disulfide while the tetraalkoxide complex produces benzaldehyde and benzyl alcohol in a 1:1 ratio upon heating. This first reported example of $\beta$-H elimination from an osmium-alkoxide complex is presented in Chapter 2. The reactivity of …
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Structural Determination of Copolymers from the Cross-catalyzed Reactions of Phenol-formaldehyde and Polymeric Methylenediphenyl Diisocyanate
… structure of the reaction products of phenol, benzyl alcohol, 2-HMP, and 4-HMP with phenyl isocyanate were studied using 1H and 13C NMR under neutral organic and aqueous alkaline conditions. Reactions in THF-d8 under neutral conditions, without catalyst, were relatively slow, resulting in …
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Synthesis and reactivity of osmium-chromium oxidation catalysts and routes to a chiral analog
… for the oxidation of primary and secondary alcohols to the corresponding aldehydes and ketones using dioxygen as the secondary oxidant. These complexes also catalyze the oxidation of 1,2-bis(diphenylphosphino)ethane (dppe) to the corresponding phosphine oxide, …
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Biotransformation of aromatic hydrocarbons and organic sulphides by fungi
Toluene is converted to benzyl alcohol by the fungi Mortierella isabellina and Helminthosporium species; in the latter case, the product is further metabolized. Toluene-a -d 1 , toluene-a,a-d2, and toluene-a,a,a-d 3 have been used with Mortierellaisabellina in a series of experiments to determine …
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Studies in Ring Opening Polymerisation: the Interactions of Some Cyclic Esters with a Bimetallic Oxoalkoxide
… of catalytic amounts of pyridine and also benzyl alcohol, and the results of the former study have been considered in the light of earlier similar studies involving other anhydrocarboxylates.
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The Dynamics of Dehydrogenases - A Phase Space Odyssey
… H/D kinetic isotope effect of the conversion of benzyl alcohol to benzaldehyde in yeast alcohol dehydrogenase to within the margin of error of experimentally measured kinetic isotope effects of the same reaction. Second, I examined the role that evolution plays in the preservation of these …
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Infrared spectroscopy of cluster ions: High energy conformer trapping and multiple photon absorption
… are reported for M+(C6H6)2-4(H2O)2Ar and M+(benzyl alcohol)1(H2O)1-2Ar where IRPD spectra reveal hydrogen bonds resulting from the configurations of the neutral precursors. For most of the clusters studied, spectral features from high energy conformers and global minimum energy conformers …
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