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Metathesis and transalkylation in tandem catalysis
(North-West University, 2007)
Longer chain terminal alkenes, which are in high demand in industry, can be obtained from widely available shorter chain terminal alkenes in a tandem catalysis reaction. Tandem catalysis involves me combination of multiple ...
Modellering en sintese van alisikliese fosfienverbindings as ligande
(North-West University, 2007)
In this study alicyclic phosphine compounds were identified from the literature that has the potential to be used as new ligands for the Grubbs-type catalyst system. Molecular modelling was used to investigate the productive ...
Experimental and theoretical investigation of new Grubbs-type catalysts for the metathesis of alkenes
(North-West University, 2007)
Ondanks die hoe selektiwiteit van die eentegenerasre Grubbs-prekatallsator (Grl) gedurende die metatese ban terminale alkene, het dit 'n kort leeftyd by verhwgde temperature. Die ontwikkeling van die tweedegenerasie ...
The metathesis activity and deactivation of heterogeneous metal oxide catalytic systems
(North-West University, 2003)
During this investigation it was found that the 8 wt% W03/SiO2 catalyst was effective for the metathetical conversion of 1-octene or 1-heptene to longer chain internal olefins in the detergent range. Various factors were ...
'n Ondersoek van alkynmetatese deur middel van molekuulmodellering en laboratoriumeksperimentering
(North-West University, 2004)
In this study, the metathesis reaction of alkynes was investigated with the classic
Mo(CO)6/PhOH-catalyst system by utilizing both laboratory experimentation and molecular modelling. The reaction was optimized by using ...
Die in situ rutenium(III) chloriedkatalisatorsisteem vir alkeenmetatese in 'n nywerheidsomgewing
(North-West University, 2005)
In this study, the behaviour of an in situ-prepared RuCI3.xH20 catalytic system, where the active catalyst is generated using RuCI3.xH20 in EtOH, together with an alkyne, a ligand and an alkene substrate in the presence ...
Synthesis and modeling of alicyclic organic ligands
(North-West University, 2004)
The study of alicyclic cage molecules has in recent years increased due to the possibilities in application of these compounds. The photocyclization of the endo conformation Diels-Alder adduct of p-benzoquinone and ...
Metathesis of alkenes using ruthenium carbene complexes
(North-West University, 2005)
In this study different ruthenium carbene complexes, Grubbs 1 and 2 were investigated for the reactions of 1-, 2-, 3-octene and 1-tetradecene. All reactions were conducted in glass mini reactors equipped with Mininert® ...
Isomerisation of alkenes using metal carbenes and related transition metal complexes
(North-West University, 2005)
Different transition metal complexes such as RuCl2(=CHPh)(PCy3,)2, RuCl2(=CHPh)(PCy3)(IMes), RuCl2(=CH2) (PCy3)2, RuCl2(= CHBu)(PCy3)2, RuCl(H)(PPh3)3(CO), RuCl3, RhCl3-3H20, were used to isomerise alkenes. For the majority ...
Sintese en modellering van alisikliese dendrimere
(North-West University, 2005)
Research in the field of dendrimer chemistry has escalated in the past two decades. Dendrimers are macromolecules closely related to polymers but with a much smaller mass distribution. Because of this property, they possess ...