The Library
Iron and ruthenium catalysts for hydrogen transfer reactions
Tools
Johnson, Tarn C. (2012) Iron and ruthenium catalysts for hydrogen transfer reactions. PhD thesis, University of Warwick.
|
Text
WRAP_THESIS_Johnson_2012.pdf - Submitted Version Download (5Mb) | Preview |
Official URL: http://webcat.warwick.ac.uk/record=b2582820~S1
Abstract
The ruthenium catalysed oxidation of 1-phenylethanol derivatives with the
release of hydrogen gas has been studied. A hydrogen acceptor was introduced in
an effort to elucidate the rate-determining step of the reaction.
The transfer of hydrogen from complex alcohols to simple aldehydes and
ketones was pursued as a process for obtaining simple alcohols for fuel cell
applications. The Shvo catalyst was identified as being the most efficient catalyst
for the oxidation of difficult substrates.
A family of iron analogues of the Shvo catalyst were synthesised and
studied as precatalysts for the oxidation of alcohols. Catalyst activation was
achieved by the removal of a CO ligand using trimethylamine-N-oxide and the
oxidation of 1-phenylethanol derivatives with acetone was studied. Simple
aldehydes were evaluated as hydrogen acceptors and a novel formylation reaction
was discovered.
Asymmetric iron analogues of the Shvo catalyst were synthesised and
applied to the asymmetric transfer hydrogenation of acetophenone using 5:2 formic
acid/triethylamine. The synthesis of further analogues with a tethering group was
investigated to improve catalyst stability and enantioselectivity.
Novel chiral diamine and amino-alcohol ligands containing 1,2,3-triazole
functionalities were developed as ligands for the asymmetric transfer hydrogenation
of ketones. Tridentate diaminotriazoles provided the best activity and selectivity in
the reduction reactions with Ru3(CO)12.
Item Type: | Thesis (PhD) | ||||
---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Iron catalysts, Ruthenium, Catalysts, Oxidation | ||||
Official Date: | May 2012 | ||||
Dates: |
|
||||
Institution: | University of Warwick | ||||
Theses Department: | Department of Chemistry | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Wills, Martin | ||||
Sponsors: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Extent: | viii, 236 leaves : ill., charts | ||||
Language: | eng |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year