Browsing Doctoral Degrees (Chemistry) by Issue Date
Now showing items 1-20 of 172
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The alkaloids of the Amaryllidaceae : the isolation and structures of two new alkaloids from Haemanthus natalensis and Nerine krigeii and contributions to the chemistry of coccinine : the absolute configuration of alkaloids based on the 5:10b-Ethanophenanthridine nucleus.
(1960)No abstract available. -
The chemistry of river waters with special reference to the rivers of Natal.
(1969)No abstract available. -
Studies of some new Euphorbiaceae diterpenes.
(1971)The heartwoods of two species of South African Euphorbiaceae have been chemically investigated. From Cleistanthus schlechteri three new diterpenes possessing the hitherto unknown ent-isopimara-8(14),15-diene skeleton ... -
The chemistry of novel diterpenes from androstachys johnsonii Prain.
(1973)No abstract available. -
Investigations into the reactions of enamines and imines.
(1990)The alkylation of 2-methylcyclohexanone imines using methyl acrylate has been investigated with a view to optimising the reaction conditions. The mechanism of this alkylation reaction has been investigated and it has been ... -
An investigation of the solvent extraction kinetics of Germanium by 7- alkylated.-8-hydroxyquinoline extractants.
(1990)Equilibrium and kinetic data for the solvent extraction of germanium by three impure commercial 7-alkylated-8hydroxyquinoline extractants which vary in structure at the 7alkyl group, are evaluated in order to elucidate ... -
Investigations in dienamine chemistry.
(1991)Reaction of the pyrrolidine dienamines of ~1,8a-2-octalones with methyl vinyl ketone is complex. In methanol as solvent, the reaction occurs primarily with the linear dienamine isomer and results in annulation of the ... -
The redox and co-ordination chemistry of some dinuclear diphosphazane- bridged derivatives of ruthenium.
(1991)Abstract available in pdf file. -
Asymmetric synthesis with an ephedrine based chiral auxilliary.
(1992)Abstract available in pdf file. -
Structure and stereochemistry of compounds from Cassipourea species.
(1993)Abstract available in pdf file. -
Isolation and identification of novel compounds from indigenous plants.
(1993)Abstract available in pdf file. -
Electrochemical investigation of the growth of anodic films on iron and ferrous alloys.
(1994)An electrochemical investigation of the corrosion of iron and Fe18Cr based stainless steel alloys was undertaken with particular emphasis on the nucleation and growth of surface films. Chronoamperometry was shown to be ... -
A powder diffraction study of problems in platinum group metal extraction.
(1994)The base metal and platinum group metal extractive processes for two South African refineries were examined using x-ray powder diffraction. Base metal refinery matte contained nickel sulphide (Ni3S2), copper sulphide ... -
Ruthenium and silver complexes of potentially binucleating phosphoruspyridyl and phosphorusbipyridyl ligands.
(1994)Abstract available in pdf file.