| 研究生: |
林育德 Lin, Yu-De |
|---|---|
| 論文名稱: |
合成及應用菲類衍生物 Synthesis and Applications of Phenanthrenes |
| 指導教授: |
吳耀庭
Wu, Yao-Ting |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2012 |
| 畢業學年度: | 100 |
| 語文別: | 中文 |
| 論文頁數: | 70 |
| 中文關鍵詞: | 環加成 、鈀金屬 、菲 |
| 外文關鍵詞: | cycloaddition, palladium, phenanthrene |
| 相關次數: | 點閱:110 下載:2 |
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菲類化合物擁有許多實用價值,包含用以製備具有藥理活性的生物鹼,有機半導體材料及富勒烯的片段架構–碗狀化合物。所以尋找一個簡便的方法來合成菲類化合物是一個重要的課題。
本論文研究中,以不同取代的雙碘聯苯衍生物為起始物,在鈀金屬催化下與炔類化合物進行環加成反應得到多種菲類化合物。在此催化系統中,我們嘗試改變多種催化試劑、配位基、銀試劑及溫度條件。實驗結果發現,在配位基三叔丁基磷與1,3-二(2,6-二異丙基苯基)氯化咪唑翁等比例混合的條件下具有較佳的反應效果。可以抑制β-氫脫去反應的發生,具有優異的選擇性及官能基容忍度,我們成功製備出十餘種菲類化合物,產率為50–91%。
此外,我們也將此合成技術運用在製備菲并吲哚啶生物鹼的研究上。將雙碘聯苯的衍生物與(S)-2-(3-三甲基矽基-2-丙炔)吡咯啶反應環合可得去矽烷基菲化合物 (+)-(S)-(61),再經由Pictet-Spengler 環化反應成功合成出菲并吲哚啶生物鹼 (+)-(S)-(59)。
Phenanthrene derivatives are an important skeleton in many useful compounds, including alkaloids of phenanthroindolizidines, organic semiconductors and elementary subunit of buckminsterfullerene.
For this reason, the goal in this research is to develop a simple synthetic method for the generation of phenanthrenes. The scope and limitations of the reactions were studied, numerous phenanthrenes were efficiently generated by Palladium-catalyzed cycloaddition of various 2,2'-diiodobiphenyls with alkyne in moderate yield to good yield.
The optimized method was applied in the synthesis of phenanthroindolizidine alkaloids. Palladium-catalyzed cycloaddition of 2,2'-diiodobiphenyl with the (S)-2-(3-trimethylsilyl-2-propynyl)pyrrolidine gave a moderate yield of the desilylated overcrowded 4,5-disubstituted phenanthrene, which was then converted into phenanthroindolizidine by the Pictet-Spengler cyclization.
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