Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
N-Heterocyclic Carbene-Phosphine Iridium Catalyzed Alkylation Reactions and Asymmetric Hydrogenation of Ketones
Stockholm University, Faculty of Science, Department of Organic Chemistry.
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis is focused on hydrogen transfer reactions using N-heterocyclic carbenephosphine iridium catalysts and is divided in two parts. The first part describes the use of achiral N-heterocyclic carbene-phosphine iridium complexes catalyzing the methylation of ketones and alkylation of amides using alcohols as the electrophile. In Chapter 2, the N-heterocyclic carbene-phosphine iridium complexes that have been developed in the Andersson group was employed as catalysts for the methylation of ketones. These reactions were found to take place under mild conditions with low catalyst loading (1.0 mol%) to furnish the desired methylated products in up to 98% isolated yield. The achiral N-heterocyclic carbene-phosphine iridium complexes were also found to catalyze the N-alkylation of amides with alcohols, as presented in Chapter 3. It was discovered that the reactivity of the catalysts was highly dependent on the structure of the catalyst. At optimum reaction conditions, the best catalyst could be used with a wide range of substrates at low catalyst loading (0.5 mol%) to afford the desired product up to 98% isolated yield.

The second part of this thesis details the preparation of chiral N-heterocyclic carbenephosphine iridium complexes and their use in the asymmetric hydrogenation of ketones (Chapter 4). These catalysts were successfully used in the asymmetric hydrogenation of ketones at room temperature under base-free conditions and led to full conversion of chiral alcohol products in 30 min with high enantiomeric excess (up to 96%).

Place, publisher, year, edition, pages
Stockholm: Stockholm University, 2015. , 39 p.
Keyword [en]
C-C coupling reactions, hydrogen transfer, iridium, ketones, methylation
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:su:diva-117171OAI: oai:DiVA.org:su-117171DiVA: diva2:811131
Presentation
2015-04-16, Arrheniuslaboratoriet, Svante Arrhenius Väg 16C, Stockholm, 13:00 (English)
Available from: 2015-05-11 Created: 2015-05-11 Last updated: 2015-05-11Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Kerdphon, Sutthichat
By organisation
Department of Organic Chemistry
Organic Chemistry

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 65 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf