Development of optically active cyclopentadienyl ruthenium complexes and their application in asymmetric catalysis
Abstract/Contents
- Abstract
- Novel ruthenium complexes were developed containing a cyclopentadienyl (Cp) ligand tethered to a chiral sulfoxide, which also serves as a ligand. These complexes were synthesized via a [3+2] dehydrogenative cycloaddition between a Ru-[pi]-allyl complex and a terminal acetylene. Using the cycloaddition as a key step, the desired sulfoxide-ligated complexes could be prepared in six linear steps without the use of toxic metallating reagents such as thallium salts. A diverse library of complexes could be accessed through this method, which speaks to the robust nature of the key cycloaddition step. Using these complexes, a CpRu-catalyzed branched-selective asymmetric allylic alkylation (AAA) was developed. Using this method, various oxygen nucleophiles could be alkylated with allyl chloride electrophiles to provide branched ethers, esters and alcohols with high levels of regio- and enantioselectivity. These complexes also were effective in catalyzing an asymmetric redox bicycloisomerization to generate complex [3.1.0]- and [4.1.0]-azabicycles from simple propargyl alcohol substrates.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2013 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Rao, Meera |
|---|---|
| Associated with | Stanford University, Department of Chemistry. |
| Primary advisor | Trost, Barry M |
| Thesis advisor | Trost, Barry M |
| Thesis advisor | Du Bois, Justin |
| Thesis advisor | Khosla, Chaitan, 1964- |
| Advisor | Du Bois, Justin |
| Advisor | Khosla, Chaitan, 1964- |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Meera Rao. |
|---|---|
| Note | Submitted to the Department of Chemistry. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2013. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2013 by Meera Rao
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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