Enantioselective synthesis of non-biaryl atropisomers
<p>This thesis describes the development of novel methods to synthesise non-biaryl atropisomers enantioselectively. In Chapter 1, atropisomerism is defined and explored, with a focus on non-biaryl atropisomers and the literature stereoselective syntheses of chiral naphthamides. Chapter 2 discu...
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| Định dạng: | Luận văn |
| Ngôn ngữ: | English |
| Được phát hành: |
2019
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| Những chủ đề: |
| Tóm tắt: | <p>This thesis describes the development of novel methods to synthesise non-biaryl atropisomers enantioselectively. In Chapter 1, atropisomerism is defined and explored, with a focus on non-biaryl atropisomers and the literature stereoselective syntheses of chiral naphthamides. Chapter 2 discusses initial attempts to synthesise chiral naphthamides using phase-transfer catalysis, and the barriers to rotation of intermediate enol ethers, and benzylated and debenzylated naphthols are determined. Chapter 3 concerns investigations into the low barriers to rotation of these debenzylated naphthols. Chapter 4 builds on this work to develop an enantioselective synthesis of benzylated naphthamides via a dynamic kinetic resolution of the naphthol starting material. This reaction was tested on a wide variety of substrates to determine its scope and limitations, and the barriers to rotation of the chiral products were calculated.</p> |
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