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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.
1

Separation and preparation of epimeric alcolhols of the cyclohexane series

Jackman, L. M. (Lloyd Miles) January 1949 (has links) (PDF)
Typewritten copy Undertakes research on epimeric disubstituted cyclohexanes. Describes the results of several methods of preparation and isolation of "cis" and "trans" epimeric alcohols related to cyclohexane
2

Separation and preparation of epimeric alcolhols of the cyclohexane series /

Jackman, L. M. January 1948 (has links) (PDF)
Thesis (M.Sc.) -- University of Adelaide, 1949. / Typewritten copy.
3

The kinetics of the thermal iodination of cyclohexene ...

Birkenhauer, Robert Joseph, January 1941 (has links)
Thesis (Ph. D.)--University of Notre Dame, 1941. / Cover title. Vita: p. [3] of cover. Bibliography: p. 14.
4

Dipole moment studies of 1,1- and 1,2-dihalocyclohexanes [A.] B. The photo addition of hydrogen bromide to 1-chlorocyclohexane.

Flowers, Dervin Leo, January 1960 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1960. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
5

Synthetic studies toward Gabosines analogues.

January 2010 (has links)
Chen, Yingcong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 89-91). / Abstracts in English and Chinese. / Acknowledgement --- p.I / Table of Contents --- p.II / Abstract --- p.III / Abstract (Chinese Version) --- p.IV / Abbreviation --- p.V / Chapter 1. --- Introduction --- p.1 / Chapter 1.1 --- Gabosines and Its Related Derivatives --- p.1 / Chapter 1.2 --- Synthesis of Gabosine I --- p.3 / Chapter 1.3 --- Synthesis of (+)-Streptol and 1-epi-Streptol --- p.6 / Chapter 1.4 --- Synthesis of a-D-pseudo-glucose. --- p.9 / Chapter 2. --- Results and Discussion --- p.11 / Chapter 2.1 --- Enantiospecific Syntheses of Gabosine I --- p.11 / Chapter 2.2 --- Enantiospecific Syntheses of 2-epi-Gabosine I --- p.25 / Chapter 2.3 --- Enantiospecific Syntheses of Streptol and 1-epi-Streptol --- p.33 / Chapter 2.4 --- Enantiospecific Syntheses of Gabosine K analogues --- p.36 / Chapter 2.5 --- Enantiospecific Syntheses of a-D-Pseudo-glucose. --- p.40 / Chapter 3. --- Conclusion --- p.41 / Chapter 4. --- Experimental --- p.45 / Chapter 5. --- References --- p.88 / Chapter 6. --- Appendix / List of spectra and Data of X-ray crystallography
6

Vapour phase dehydrogenation of cyclohexane on microstructured reactors

Mpuhlu, Batsho January 2012 (has links)
The work that is described in this thesis forms part of the research and development projects at InnoVenton: NMMU Institute of Chemical Technology in collaboration with Sasol Technologies. The broader view of the project was testing on the so-called “Small Production Platforms” (SPP’s). In particular the main aim of this study was to investigate the effect of micro-structuring on the heterogeneous catalysed, vapour-phase oxidative dehydrogenation of cyclohexane in the presence of air. Ground work studies were done to provide a proper comparison of the micro-structured reactor with a traditional fixed-bed reactor. These included evaluation of a proper vanadium pyrophosphate catalyst for the reaction, testing of reaction parameters for the oxidative dehydrogenation reaction on a fixed-bed reactor and lastly comparing the performance of the micro-structured reactor to that of the fixed-bed reactor Various vanadium pyrophosphate catalysts that were tested for activity included: bulk (VO)2P2O7, bulk (VO)2P2O7 promoted with Fe, (VO)2P2O7 supported on -Al2O3 and Fe promoted (VO)2P2O7 supported on -Al2O3. These catalysts showed significant differences in TOF, however it was not conclusive from the results whether these differences may be traced to increased activity for dehydrogenation for different catalysts since all reactions were run under conditions of oxygen deficiency. It is, however, clear that Fe promotion significantly increase activity, irrespective of the relative degrees of oxidative dehydrogenation and normal dehydrogenation. The Fe promoted catalyst was further tested for long term stability in-view of using it as the catalyst in the micro-structured reactor. These studies showed the catalyst to have a high degree of stability with minimal structural changes under the reaction conditions used. Various response surface models describing the variation in each of the cyclohexane conversion, cyclohexene selectivity, and benzene selectivity, respectively when changing reaction condition, were derived by means of multiple regression. To obtain some idea of the degree and nature of the normal dehydrogenation reaction, the amount of deficit oxygen was estimated from the measured results for cyclohexane conversion and cyclohexene and benzene selectivities. These estimated values were also modelled as described above. The regression models were used to interpret specific trends in the responses for the oxidative dehydrogenation of cyclohexane and account for the oxygen deficit in the system. The performance of a fixed bed tubular reactor (FBR) and micro-structured sandwich reactor (MSSR) were compared over an Fe promoted vanadium pyrophosphate. Reactor performance was evaluated by varying specific reaction conditions (temperature and space velocity). Subsequently the turn-over frequencies, conversion and selectivities from the two reactors were compared. The conversion achieved in the micro-structured reactor was observed to be significantly higher than that achieved in the fixed-bed reactor at all reaction parameters. This is despite the fact that the total amount of catalyst in the micro-structured reactor is approximately 5 times less than that used in the fixed bed reactor. In addition, the contact time (1/MHSV) in the micro-structured reactor is also significantly shorter than in the fixed-bed reactor.
7

[Pi]-route synthesis of azabicylics.

Dygos, John Henry January 1970 (has links)
No description available.
8

Stereoselective routes to 1,2-disubstituted cyclohexanes

Birtwistle, D. H. January 1988 (has links)
No description available.
9

N.M.R. studies of mobile equilibria

Carr, C. A. January 1987 (has links)
No description available.
10

Stereochemistry of 2-methyl cyclohexane-carboxylic acid, and its derivatives /

Simmonds, David Hubert. January 1947 (has links) (PDF)
Thesis (M.Sc.) --University of Adelaide, 1947. / Typewr. copy.

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