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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.
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Showing 81 to 90 of 200 (0.007 seconds)| 81 |
Temporary silicon-tethered ring-closing metathesis approach to polyketide fragments : Asymmetric synthesis of the C1-C30 fragments of amphidinol 3Cusak, Alen January 2009 (has links)
No description available.
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| 82 |
Electrophilic additions of sulphenyl halides to olefinsBeverly, G. M. January 1966 (has links)
No description available.
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| 83 |
Pyrolysis of di-tertiary-butyl peroxide : the effect of added gasesCruickshank, F. R. January 1966 (has links)
No description available.
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| 84 |
Electrophilic additions of sulphenic acid derivatives to olefinsSmith, J. H. January 1968 (has links)
No description available.
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| 85 |
An investigation of the syntheses and properties of some tetraarylsuccinic acids, their isomers and anhydridesCooper, J. Y. January 1954 (has links)
No description available.
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| 86 |
The oxidation of acetylenic hydrocarbonsLyon, D. January 1969 (has links)
No description available.
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| 87 |
Novel aspects of alkane pyrolysisKanan, K. M. M. January 1981 (has links)
A technique of study of complex gas-phase chain reactions based upon deliberately inducing reaction vessel wall activity has been developed. Activation of quartz or glass I vessels by treatment with concentrated caustic soda has produced vessels capable of reducing chain lengths in propane pyrolysis by up to one hundred times and in ethane pyrolysis by over an order of magnitude. It has been established that the method of "induced heterogeneity" developed here is a very powerful addition to the technical armoury of gas kinetics, entirely capable of extension to a wide variety of other reactions.
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| 88 |
Thermal reactions of alkyl radicalsPage, N. D. January 1977 (has links)
No description available.
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| 89 |
The reactions of hydrogen atoms with simple alkenesLexton, M. J. January 1973 (has links)
No description available.
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| 90 |
Chemical derivatisation for LC-MSLeavens, W. J. January 2003 (has links)
The investigation of the chemical derivatisation of low molecular weight compounds containing carboxylic acid, amine, alcohol, aldehyde or ketone functional groups by novel reagents designed to enhance their response by liquid chromatography-electrospray ionisation mass spectrometry (LC-ESI/MS) is described. A series of novel reagents containing functionalised ferrocene or tris(2,4,6-trimethoxyphenyl)phosphonium (TMPP) moieties were synthesised for pre-column derivatisation of the target analytes. The ferrocene reagents enabled facile electrospray ionisation, through formation of the molecular cation or the protonated molecular ion, whilst the TMPP reagents provided a molecular cation (or "pre-charged" species). Additionally, the ferrocene reagents provided an elemental tag to facilitate analysis of the derivative by inductively coupled plasma mass spectrometry (ICP/MS). Carboxylic acids were activated by chloromethylpyridinium iodide in the presence of an organic base or by a water-soluble carbodiimide and reacted with an amine to produce a stable amide linkage. Both carboxylic acid and amine-containing analogues of ferrocene and TMPP were synthesised for use with this coupling reaction. Derivatisation of aldehydes and ketones was achieved by reaction of hydrazino analogues of TMPP to form hydrazone derivatives. Additionally, derivatisation was also achieved through the use of activated esters of ferrocene and TMPP and their nucleophilic displacement reaction with amines.
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