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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 319 for “"alkylation"”.
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Intramolecular carbon alkylation
iii, 154 leaves : ill., offprint
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Alkylation of Oxime Salts
Made available in DSpace on 2014-12-09T17:35:21Z (GMT). No. of bitstreams: 1 6604168.pdf: 4193937 bytes, checksum: 7ec11b83cb612c0a49c9c4b9457a5184 (MD5) Previous issue date: 1965
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Aromatic acetals : their synthesis and alkylation
<p>The purpose of this investigation was to study the known methods of forming acetals and find one or several that could be used in further investigation. In connection with the reactions, the use of various catalysts was pertinent. Some of the catalysts used were hydrogen chloride, calcium …
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REVERSIBLE QUINONE METHIDE ALKYLATION OF DNA
Alkylation of DNA has been found to cause cancer and also to serve as its treatment. Quinone methides (QMs) are highly electrophilic molecules implicated in numerous metabolism processes. Studies of QM's reversible reaction with nucleophiles of DNA are important to understand the mechanism of its …
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Dienone Formation by Alkylation of Phenol Salts
Made available in DSpace on 2014-12-05T19:37:40Z (GMT). No. of bitstreams: 1 6101605.pdf: 4895874 bytes, checksum: c905e3a13e56a7da2df00561ee9d4a3a (MD5) Previous issue date: 1961
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Alkylation of rat lens crystallins with iodoacetamide
Alkylation of lens proteins with iodoacetamide during homogenization of tissue (50 millimolar excess) immediately followed by gel-permeation chromatography yielded a crystallin population devoid of βH-crystallin. This result occurred in lens homogenates from both young (100 g) and older (400 g) …
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Brønsted acid-catalyzed alkylation of tetrazoles with alcohols
… While Lewis and Brønsted acid-catalyzed alkylations of tetrazoles using alcohols have been reported, their drawbacks include the necessity to use excess of strong Brønsted acid, narrow scope, long reaction time and poor functional group tolerance. Recently, we developed a methodology for …
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Alkylation of Boron Nitride Nanomaterials using Reductive Conditions
Boron nitride nanomaterials possess an unparalleled combination of properties: their mechanic properties are superior to that of steel, their thermal conductivity is comparable to that of copper, their band gap is that of an insulating material, and their chemical and thermal stability is …
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A Study of Lead Alkylation in Natural Systems
… prepared in order to investigate the biological alkylation of lead (IV) salts. The behaviour of dialkyl and trialkyllead compounds on natural and artificial sediments was also followed. Conclusions drawn from the comparison of the two systems may help to cast light upon the apparent biological …
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Palladium(II) catalyzed allylic C-H alkylation reactions
… of the first palladium(II)-catalyzed allylic C-H alkylation reaction. Allylic alkylation has long been performed by palladium(0) catalysis with allylic oxygenate starting materials. In contrast, this method proceeds directly from the readily accessible, chemically robust a-olefin moiety. The …
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Diastereoselective α-Alkylation of Chiral β-Borylated Esters
… of a novel diastereoselective reaction for the α-alkylation of chiral β-borylated esters. We propose that standard deprotonation of chiral β-borylated esters with lithium diisopropylamide (LDA) leads to the formation of a boron"ate" intermediate that upon treatment with an alkylation reagent …
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Reductive Alkylation of Proteins Towards Structural and Biological Applications
Nuclear magnetic resonance (NMR) spectroscopy is a proven technique for protein structure and dynamic studies, typically requiring the incorporation of stable magnetic isotopes to improve sensitivity and assign resonances. Degenerate levels of 13C-incorporation have been the biggest obstacle for …
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Late stage oxidative C(sp3)–H alkylation and arylation
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Zeolites for Cleaner Processes: Alkylation of isobutane and n-butene
… and hazardous mineral acids as catalysts in alkylation processes. However, due to rapid deactivation of these zeolites, their acceptance in industrial alkylation has been delayed. In this study we seek a deeper understanding of the kinetics, transport, and sorption of organic molecules used …
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