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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

The dielectric behavior of fatty acids and their methyl esters /

Mays, George Winton January 1953 (has links)
No description available.
112

Surface properties of cholesterol esters and methyl esters of polyenoic fatty acide /

Kwong, Chui Ngor January 1969 (has links)
No description available.
113

Part I. Nucleophilic cleavage of p-toluenesulfonates ; Parts II. and III. 7-methyl- and 7-aryl-7-norbornenyl cations.

Pascone, John Michele January 1972 (has links)
No description available.
114

A study of chromatography applied to the higher fatty acid methyl esters

Dal Nogare, Stephen. January 1947 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1947. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [92-97]).
115

Dipole Moments of Olefinic Esters

Poteet, Horace M. January 1952 (has links)
It is the purpose of this thesis to investigate the applicability of the Debye equation to measurements dipole moments of polar compounds in dilute solutions of non-polar solvents more fully than has been done by previous workers at this institution.
116

Developments in the hydrogenation of challenging substrates utilising transition metal complexes

Carpenter, Ian January 2015 (has links)
This thesis describes the developments of new protocols for the hydrogenation of challenging substrates. Three specific substrates were highlighted for study after an initial review of the literature; benzofurans, esters and bulky ketones. Chapter 1 details a review of the hydrogenation of challenging unsaturated substrates, highlighting areas where development is still required. Chapter 2 describes studies on the hydrogenation of 2,3-benzofuran. While a benzofuran hydrogenation catalysts was optimised, severe conditions were required to facilitate the reaction, and not found to be applicable for more elaborate substrates. We therefore considered an alternative process of enantioselective hydrogenation of benzofuranyl ketones followed by heterogeneous hydrogenation. A good process for transfer hydrogenation of a range of these hitherto unstudied substrates was developed along with greater understanding. The hydrogenation of esters is another challenge in the catalytic reduction field, so was also selected for study, with the results described in Chapter 3. After screening a range of catalysts of types [RuCl₂ (diphosphine)(diamine)] and [RuCl₂ (PNX)(DMSO)], good catalysts were identified. Successful hydrogenation of a range of esters, under mild conditions was achieved using [RuCl₂ (1,3-bisdiphenylphosphinepropane)(2-aminomethylpyridine)] using high concentrations of base co-catalyst. [RuCl₂ ((2-(diphenylphosphanylbenzyl)ethane-1,2-diamine)(DMSO)] combined with 15-25 mol% of a basic co-catalyst have been shown to be active at near ambient conditions in the hydrogenation of aromatic esters. Chapter 4 related to studies where the activity of Ru, Ir and Rh complexes of the same tridentate ligand were tested in the hydrogenation of ketones that would be regarded as sluggish substrates. Highly active and selective catalysts for the hydrogenation of bulky acetophenone derivatives were found using iridium complexes of PNX ligands (formed in situ). The highest selectivity was obtained with acetophenone substrates containing iso-propyl and cyclohexyl substituents, or medicinally important piperdinyl groups. In the best cases over 90% e.e. was observed with high conversions and with only 0.1 mol% of catalyst.
117

Studies on the reduction of unsaturated thioesters using copper hydride

Li, Ninglin., 李宁琳. January 2010 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
118

The study of memory effects in allylic alkylation

Stephen, Susanna Catherine January 2000 (has links)
No description available.
119

Specific adsorption of the methylesters of n-fatty acids at the silica/benzene and silica/carbon tetrachloride interfaces

Mills, A. K. January 1972 (has links)
No description available.
120

Synthesis of #DELTA#'9-desaturase inhibitors and related cyclopropenes

Simpson, Michael J. January 1991 (has links)
No description available.

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