Global ETD Search
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 109 for “"Decarboxylation"”.
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Carbon Isotope Effects: Malonic Acid Decarboxylation
Made available in DSpace on 2014-12-05T19:37:01Z (GMT). No. of bitstreams: 1 5900526.pdf: 3674148 bytes, checksum: 7b4988e9c0a6f505ce9e8dd72b26b4bd (MD5) Previous issue date: 1958
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Solvent effects in the decarboxylation of 3-carboxybenzisoxazoles.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1970. Ph.D.
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Structural requirements for enzymatic efficiency in cofactor-independent decarboxylation
… biosynthetic pathway. It catalyzes the decarboxylation of orotidine 5’-monophosphate (OMP) to uridine 5’-monophosphate (UMP), without the requirement of a cofactor. It provides catalytic rate enhancements of ~1017, compared to the uncatalyzed reaction, making it one of the most efficient …
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The decarboxylation and dehydrogenation of an unsaturated fatty acid
Thesis. (M.S.) Massachusetts Institute of Technology. Dept. of Geology, 1950.
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Carbon Isotope Effects in the Decarboxylation of Malonic Acid Vapor
Made available in DSpace on 2014-12-05T19:37:22Z (GMT). No. of bitstreams: 1 6001646.pdf: 3487741 bytes, checksum: bc4ce7161774b52e90b76ebaacd3b38f (MD5) Previous issue date: 1960
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The Brominative Decarboxylation of Optically Active Silver Trans-1,2-Cyclohexanedicarboxylate
Made available in DSpace on 2014-12-05T19:37:58Z (GMT). No. of bitstreams: 1 6202989.pdf: 5901246 bytes, checksum: 485327b913549e3c2441535aee6783db (MD5) Previous issue date: 1962
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Radical decarboxylation strategies for the synthesis of nitrogen-containing heterocycles
Nitrogen-containing heteroaromatics are ubiquitous in nature. In addition, 75% of FDA-approved drugs currently on the market are based on these compounds, establishing them and their analogues as a primary source of therapeutic agents in the pharmaceutical industry. The structural complexity …
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Production of Renewable Diesel Fuel via Hofer-Moest Decarboxylation of Free Fatty Acids
… 2.5 V/cell causes a two-electron Hofer-Moest decarboxylation. This reaction produces several hydrocarbons, ethers, and esters at a current efficiency of approximately 73.9%. Using 2011 electricity statistics, an average electrical energy cost to produce one gallon of the fuel from pure oleic …
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Carbon Isotope Effects in Malonic Acid Decarboxylation. I. Influence of Perdeuteration. Ii. The Ionization Effect
Made available in DSpace on 2014-12-09T17:34:48Z (GMT). No. of bitstreams: 1 6406093.pdf: 7747900 bytes, checksum: e5faf38c5cf92af6b31842662693a576 (MD5) Previous issue date: 1963
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Mechanistic Studies of the Decarboxylation Reaction of 1,3-Dimethylortic Acid: A Possible Mechanism for Orotate Decarboxylase
Made available in DSpace on 2014-12-10T23:01:58Z (GMT). No. of bitstreams: 1 7500433.pdf: 4318318 bytes, checksum: b561e8b5c78d80616e1855d67017e6d2 (MD5) Previous issue date: 1974
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Green Diesel Production Via Catalytic Hydrogenation/decarboxylation Of Triglycerides And Fatty Acids Of Vegetable Oil And Brown Grease
… This thesis proposes a new technology- selective decarboxylation of brown grease, which is a mixture of fats and oils collected from waste water trap and rich in fatty acids, over a supported noble metal catalyst that overcomes the green diesel production challenges. In contrast to other …
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An Examination of γ-valerolactone Ring Opening and Decarboxylation in Multiphase System and Over Various Solid Acid Catalysts
… form pentenoic acid (PEA) isomers and following decarboxylation to produce butenes. In this study, GVL ring opening, and decarboxylation are examined in both liquid and gas phases over various catalytic systems aiming at improving the efficiency in selective preparation of target product. An …
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An Examination Of Γ-valerolactone Ring Opening And Decarboxylation In Multiphase System And Over Various Solid Acid Catalysts
… form pentenoic acid (PEA) isomers and following decarboxylation to produce butenes. In this study, GVL ring opening, and decarboxylation are examined in both liquid and gas phases over various catalytic systems aiming at improving the efficiency in selective preparation of target product. An …
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Electrochemically-Enabled Late-Stage Peptide C-terminal Modifications
… peptide and protein systems, electrochemical decarboxylation stands as an attractive modification strategy. The methodologies described in this thesis explore the chemo- and regio-selectivity of direct anodic oxidation of peptide C-terminal carboxylates, leveraging electrochemically-generated …
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Electrochemically-Enabled Late-Stage Peptide C-terminal Modifications
… peptide and protein systems, electrochemical decarboxylation stands as an attractive modification strategy. The methodologies described in this thesis explore the chemo- and regio-selectivity of direct anodic oxidation of peptide C-terminal carboxylates, leveraging electrochemically-generated …
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Biofuels Production Via Catalytic Hydrocracking Of Ddgs Corn Oil And Hydrothermal Decarboxylation Of Oleic Acid Over Transition Metal Carbides Supported On Al-Sba-15
… on Al-SBA-15 were studied for the hydrothermal decarboxylation of oleic acid and soybean oil to produce diesel range hydrocarbons with no added H2. The effect of pre-reduction, sub-critical and super-critical water conditions on the catalyst activity and selectivity was investigated. Both the …
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The mechanism of hydrolysis of triphenylsilyl fluorides in water-acetone solutions and the mechanism of decarboxylation of β-ketoacids in water, benzene, and hexane
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1951
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The purification and characterization of phosphoenolpyruvate carboxykinase
… at pH 7.0 and the ITP- and Mn⁺⁺ - dependent decarboxylation of 4650 moles of oxalacetate per min per mole of enzyme at pH 7.5. The enzyme exhibits a relatively high degree of specificity for inosine and guanosine nucleotides in the carboxylation, decarboxylation and oxalacetate-H¹⁴CO₃⁻ …
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Decarboxylative Transformations Facilitated via Intermolecular Halogen Transposition using gem-Bromonitroalkanes
… readily available, their facile activation via decarboxylation delivers value-added chemicals in a cost effective and eco-friendly manner. In this context, photoredox-catalyzed elimination and cross-coupling methodologies were developed via merger of decarboxylation with intermolecular halogen …
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Investigation of Substrate Specificity in Phosphate Binding Barrels and Mechanistic Studies of Orotidine Monophosphate Decarboxylase
… thermoautotrophicum (MtOMPDC) catalyzes the decarboxylation of orotidine 5'-monophosphate (OMP) and uridine 5'-monophosphate (UMP) with an enormous rate acceleration, 1.8 x 1016 (kcat = 5 s-1, 25°C; knon = 2.8 x 1016 s-1), and proficiency, 7.1 x 1021 M-1 (kcat /KM = 2.0 x 106 M-1 s -1, …
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