Browsing by Title
Now showing items 15556-15575 of 17238
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Synthesis of camphor derived ligands for applications in asymmetric catalysis.
(2006)Chiral crown ethers have recently been shown to be useful asymmetric catalysts in many carbon-carbon bond forming reactions. The design and synthesis of new chiral macrocycles and ligands for use in asymmetric catalysis ... -
Synthesis of chiral cage annulated macrocycles.
(2006)Chiral crown ethers have recently been shown to be useful asymmetric catalysts in many carbon-carbon bond forming reactions. The design and synthesis of new chiral macrocycles and ligands for use in asymmetric catalysis ... -
Synthesis of DNA - protein conjugates and a preliminary study of their interaction with eukaryotic cell receptors.
(1986)Thymidine oligomers were chemically synthesised and linked to available amino functions of transferrin in alternative orientations: (a) A CMP residue attached to the 3' end of (pT)₁₀ with terminal deoxynucleotidyl transferase ... -
Synthesis of fluorinated benzophenones and phenylcoumarins.
(2015)The aim of this project was to develop methods for the preparation of fluorine analogues of natural products. The incorporation of fluorine into bioactive organic compounds enhances bioactivity and the replacement of either ... -
Synthesis of hexafluorobenzene through batch reactive distillation.
(2018)South Africa is home to the second largest fluorspar (CaF2) reserves in the world, outside China; and it is consequently integral to the international supply of CaF2 to hydrogen fluoride producers. This is demonstrated ... -
Synthesis of hydrocarbons and fluorocarbons in a tip-tip arc discharge reactor at high pressure.
(2013)Abstract available in PDF file. -
Synthesis of nitrogen-, oxygen- and phosphine- donor palladium(II) complexes for the catalytic hydrogenation and methoxycarbonylation of alkenes and alkynes.
(2019)Reactions of N-(1H-benzoimidazol-2-ylmethyl-2-methoxy)aniline (L1) and N-(1H-benzoimidazol-2-ylmethyl-2-bromo)aniline (L2) with p-TsOH, Pd(AOc)2 and two equivalents of PPh3 or PCy3 produced the corresponding palladium ... -
Synthesis of novel benzimidazole derivatives and their platinum (II) complexes.
(2010)Benzimidazole and its derivatives have attracted many organic chemists due to their interesting biological activities. These include activities against viruses such as, HIV, RNA, herpes (HSV-1), influenza, and cytomegalovirus ... -
Synthesis of novel benzimidazole derivatives and their platinum (II) complexes.
(2010)Imidazo[1,5-a]pyridines are an important and versatile class of N-heterocyclic compounds due to their stability, unique biological, and photochemical properties. Due to the conjugation and charged structure, their ... -
Synthesis of novel cage amino acid analogues.
(2001)Amino acids are important building blocks for the synthesis of a large number of biologically active compounds and drugs. Amino acids with the pentacyclo-undecane (1) and trishomocubane (2) frameworks fall into the class ... -
Synthesis of novel pentacyclo-undecane chiral ligands for application in asymmetric catalysis
(2008)There is enormous interest in the design and development of efficient chiral ligands for asymmetric catalysis, as a result, this field has become one of the most popular areas of research in organic chemistry. This ... -
Synthesis of novel polymeric materials for antimicrobial applications.
(2015)Abstract available in PDF file. -
Synthesis of novel tetrahydroisoquinoline chiral ligands for application in asymmetric transfer hydrogenation.
(2010)Several tetrahydroisoquinoline (TIQ) diamine derivatives were prepared for use as ligands in asymmetric transfer hydrogenation (ATH) of acetophenone of which 17 intermediates and the eight target ligands were novel compounds. ... -
Synthesis of organofluorine compounds using a falling film microreactor : process development and kinetic modelling.
(2016)South Africa is rich in valuable ore, including fluorspar (calcium fluoride), a principle feedstock used to synthesize hydrofluoric acid and a wide range of other fluorochemicals. As part of a wider initiative to promote ... -
The synthesis of oxime-and-amide bis-chelate ligands.
(2014)In this part of the thesis our intention was to pave the way for the synthesis of pentadentate ligands with the bis-chelate methyl-hydroxyacetamide binding centre augmented with a flexible pendant arm that may provide ... -
Synthesis of polycyclic hydantoin derivitaves and peptides.
(2008)Cyclic cage compounds have attracted much attention in pharmaceutical studies. The lipophilic nature of these compounds plays an important role in facilitating the crossing of the cellular membranes, including the blood ... -
Synthesis of prenylated benzoquinones.
(2010)The research presented in this study demonstrates the critical role that organic synthesis plays in natural product chemistry. The biological activity demonstrated by 2-methyl-6-(3-methyl-2- butenyl)benzo-1,4-quinone ... -
Synthesis of pyridines by using metal oxides on zirconia support as catalysts.
(2017)Abstract available in PDF file. -
Synthesis of quinoline derivatives by a Doebner-von Miller reaction using a Ag(I)-exchanged Montmorillonite K10 catalyst.
Quinolines play an important role in organic chemistry, as exemplified by their extensive application as biologically and pharmacologically active compounds. However, current methods available to access quinoline compounds ...