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Octahedral Chiral-at-Metal Iridium and Rhodium Complexes as Versatile Asymmetric Catalysts
Over the past several years, our group has been interested in designing and synthesizing different novel octahedral chiral-at-metal complexes and their application in asymmetric catalysis, including visible-light-induced asymmetric catalysis. This thesis mainly includes two parts: one is the versa...
में बचाया:
| मुख्य लेखक: | |
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| अन्य लेखक: | |
| स्वरूप: | Dissertation |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
Philipps-Universität Marburg
2016
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| विषय: | |
| ऑनलाइन पहुंच: | पीडीएफ पूर्ण पाठ |
| टैग: |
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| सारांश: | Over the past several years, our group has been interested in designing and synthesizing different novel octahedral chiral-at-metal complexes and their application in asymmetric catalysis, including visible-light-induced asymmetric catalysis.
This thesis mainly includes two parts: one is the versatile asymmetric catalysis by octahedral chiral-at-metal iridium complexes, and the other one is the visible-light-promoted asymmetric α-amination by octahedral chiral-at-metal rhodium complex.
In the first part of this thesis, octahedral chiral-at-metal iridium complexes IrS and IrO are used as highly effective chiral Lewis acid catalysts for a variety of asymmetric reactions, including Friedel-Crafts alkylations, Michael additions with CH-acidic compounds, 1,3-dipolar cycloadditions, Diels Alder cycloadditions, hetero Diels Alder cycloadditions and Henry reactions.
In the second part of the thesis, a very efficient photoactivated enantioselective radical amination of 2-acyl imidazoles catalyzed by an octahedral chiral-at-metal rhodium complex RhO is introduced. Rhodium complex here serves a dual function, namely as a chiral Lewis acid to catalyze asymmetric enolate chemistry and furthermore as a light-activated smart initiator of a radical chain process. |
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| भौतिक वर्णन: | 315 Seiten |
| डिजिटल ऑब्जेक्ट पहचानकर्ता: | 10.17192/z2016.0121 |