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.
Results
Showing 1 to 20 of 34 for “"Acid chloride"”.
-
Synthesis and performance of novel azo initiators with special reference to emulsion polymerisation
Derivatives of 4,4'-azobis-4-cyanopentanoic acid were prepared using its diacid chloride and various hydroxyl and amino compounds. The objective was to obtain substances that would act both as initiators for different modes of free-radical polymerisation and also as stabilisers for emulsion …
-
Cross-Linked Polybenzyl Ether and Polyglycerol Dendrimers for Monomolecular Imprinting
… core were synthesized by direct coupling of a acid chloride dendron to a glycoside or by attachment of an azide dendron to a core containing alkyne groups using copper-catalyzed 1,3-dipolar cycloaddition. The glycoside dendrimers displayed chiral activity that increased after the dendrimers …
-
Direct Chemiluminescence From Secondary Peresters
… (6,7,8-ij) quinolizin-10-carboxylic acid-11-one-2,3,6,7-tetrahydro-11-oxo, 1, was prepared. Several secondary peresters of 1 were generated in situ and the chemiluminescence observed from the decomposition of the peresters was studied. The quantum yield of chemiluminescence was very …
-
A comparison of ultraviolet, thermal, and microwave polymerized acrylamide terminated polydimethylsiloxane
… which was then endcapped with an acid chloride to result in a material which was linear, flexible, had a functionality of four, and a strong dipole moment. Acrylamide terminated poly(dimethylsiloxane) was the end product and was cured with ultraviolet radiation, thermal energy, and …
-
Development of novel nutrapharmaceuticals combining the anti-oxidant and anti-inflammatory properties of n-3 fatty acids with a nitric oxide donor: a potential new preventative strategy for heart disease.
… conjugates has been achieved using both acid chloride (N-decanoyl cysteamine (Compound 1), N-decanoyl L-cysteine ethyl ester (compound 3)) and peptide coupling based reactions, and full characterisation has been achieved. The nitration stage of synthesis was achieved using tert-butyl …
-
Part 1: Lanthanum(III) Triflate-Catalyzed Cyclopropanation via Intramolecular Methylene Transfer. Part 2: Reaction Design with Aromatic Ions - Nucleophilic Acyl Substitution and Organophotoredox Catalysts
… strategy is used to rapidly convert carboxylic acids to their corresponding acid chlorides with dichlorocyclopropene reagents. The effect of cyclopropene substituents and amine base additives on the rate of conversion is examined. A mild amidation protocol employing acid chloride formation is …
-
Synthesis and Characterization of trans-1,4-Cyclohexylene Ring Containing Poly(arylene ether sulfone)s
… observed from the DMA results. A series of four acid chloride monomers were synthesized and polymerized with phenol terminated PAES oligomers. Solution polymerization and pseudo-interfacial polymerization techniques were used to prepare both bisphenol-A (bis-A) based and DHBP based PAES …
-
Synthesis of novel pendant arm macrocyclic ligands as potential models for enterobactin
… via condensation with 2,3-dimethoxybenzoyl chloride. The deprotection of the catechol moieties was achieved with boron tribromide in 80% yields. The ferric complexes were characterized by electronic absorption spectroscopy. The second series of ligands described are based on the pendant arm …
-
Synthesis of Resveratrol and Its Analogs, Phase-Transfer Catalyzed Asymmetric Glycolate Aldol Reaction, and Total Synthesis of 8,9-Methylamido-Geldanamycin
… made using a decarbonylative Heck reaction. The acid chloride derived from 3,5-dihydroxybenzoic acid was coupled with suitable protected 4-hydroxystyrene in the presence of palladium acetate and N,N-bis-(2,6-diisopropylphenyl)-4,5-dihydro imidazolium chloride to give the substituted stilbene in …
-
Synthesis and biological evaluation of aeruginosin based compounds and self-assembly of glucosamine based compounds
… products containing mostly non-proteogenic amino acids. These compounds contain a common 2-carboxy-6-hydroxy-octaindole (Choi) rigid bicyclic structure. Many aeruginosins are inhibitors for enzymes involved in the blood coagulation cascade, such as thrombin and Factor VIIa. In order to understand …
-
Synthesis and Characterization of New Cyclic and Acylic Ferrocene Peptide Conjugates
… Boc group and the addition of ferrocene acid chloride at high dilutions to give the desired macrocycles of the type Dpp-(peptide)₂ Fc. (peptide = Leu-Leu (3), Leu-Leu-Leu (5) ). However, the syntheses proceeded in low yields where only small quantities of the desired products were …
-
Reactions of some non-enolisable chloroketones with amide ion and a new synthesis of acridones /|nGuo-shyoung John Chen. -- 260 St. Catharines, Ont. : [s. n.],
… potassium amide in ammonia. o-Chlorophenylacetic acid was converted to the acid chloride and then by Friedel-Craftsreaction with benzene to w-(o-chlorophenyl)acetophenone. Reaction wi.th phenylhydrazine and Fischer cyclization gave 3- (0chlorophenyl)- 2-phenylindole, which was ozonized to …
-
Synthetic studies and biological evaluation of chromone - 3 - carbaldehydes
… thereof to 4-oxo-4H-chromene-3-carboxylic acids. A series of chromone-3-carboxamides was obtained from corresponding 4-oxo-4H-chromene-3-carboxylic acid via the in situ generation of the corresponding acid chloride in good yield. The second class of compounds were achieved by reacting …
-
Synthetic and analytical investigations related to vegetable oils and fats.
… fats and oils, and the distribution of fatty acids in the sn-2 position m them are determined for the first time The n-hydrocarbon composition of most of these fats and oils is also determined for the first time. Three new routes, namely, the tosylate, the silyl ether and the phosphate route, …
-
Approaches to the synthesis of modified taxols
… taxol derivatives by coupling of the side chain acid chloride to a suitably protected baccatin III. The side chain was prepared by the Darzens condensation. Acylation of baccatin III was performed with simple acylating agents and extensive studies of the ¹H NMR and ¹³C NMR spectra of various …
-
DEVELOPMENT OF SYNTHETIC POLYMERS FOR BONE TISSUE ENGINEERING: ENGINEERING THE DEGRADATION RATE
… via two synthetic routes, including an acid catalyzed transesterification reaction of (Z)-4-((4-hydroxybutan-2-yl)oxy)-4-oxobut-2-enoic acid which was formed via a ring opening reaction of maleic anhydride with 1,3-butylene glycol (BG) and reacting the acid chlorides, maleoyl chloride …
-
Rhizophoraceae alkaloids : an approach to the synthesis of cassipourine
… the aldehyde. The reduction of the corresponding acid chloride direcl1y to the aldehyde proved less successful. The next step envisaged being the preparation of cis-l-[l'-(p-toluenesulphonyl)-pyrrolidin-2'-yl]-1,2-epoxy-3-benzyloxypropane, a number of routes leading to this compound were …
-
Solution and solid state NMR studies of fluorine tagging reagents
… In solution NMR studies p-fluorobenzoyl chloride was the fluorine tagging reagent of choice because of a large ¹⁹F chemical shift range for the different derivatized substrates (~10 ppm) and generally good reaction yields. Various classes of sterol and amino acid p-fluorobenzoyl …
-
Molecular necklaces: polyester rotaxanes
… transesterification polymerization, the acid chloride method, and interfacial polymerization. The polyrotaxanes were purified by multiple reprecipitations into good solvents for the crown ethers. In some cases the threaded macrocycles are constrained onto polymer chains by the …
-
Exploration of the use of Palladium and Nickel to Catalyze Enolate Cross-coupling and the Enantioselective Mizoroki-Heck Reaction.
… includes Birch reduction/alkylation of benzoic acid, acid chloride formation/amide formation, triflation, and then the enantioselective Mizoroki-Heck reaction. In this process, we report N-H and N-Me phenanthridinone analogs' synthesis. A protection/deprotection protocol was found to be the key …
Page 1 of 2