研究生: |
謝主翰 Chu-Han Hsieh |
---|---|
論文名稱: |
鎳金屬與有機鋁試劑共催化碳-氧鍵活化與其偶合反應之研究 Nickel Mediated Cross-Coupling Reaction via C-O Bond Activation Assisted by Organoaluminum |
指導教授: |
王朝諺
Tiow-Gan Ong |
口試委員: |
郭俊宏
Chun-Hong Kuo 李賢明 Hsien-Ming Lee 何郡軒 Jinn-Hsuan Ho |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2016 |
畢業學年度: | 104 |
語文別: | 中文 |
論文頁數: | 83 |
中文關鍵詞: | 碳氧鍵活化 、有機鋁試劑 、偶合反應 、鎳金屬 |
外文關鍵詞: | Nickel, sCross-Coupling Reaction, C-O Bond Activation, Organoaluminum |
相關次數: | 點閱:182 下載:1 |
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自然界的木質素結構中含豐富的碳-氧鍵,近幾年許多文獻報導,生質能源中的木質素經由金屬催化反應,可被二度利用,成為更高價值的資源,達綠色化學之宗旨。
本論文中,我們利用鎳金屬與有機鋁試劑共催化系統,進行碳-氧鍵活化,利用鎳金屬易於催化碳-氧鍵之特性,而有機鋁試劑不但扮演共催化的關鍵角色,同時能夠置換不同官能基進行偶合反應,其中烷化反應產率表現極佳,且利用有機鋁試劑進行芳基化,更是以往文獻中從未報導過的金屬催化方式。我們所設計開發新穎的金屬催化方法,遍及運用雜環與萘的衍生物作為反應物。接著,經由密度泛函理論 (density functional theory)計算,探討此催化反應中的碳-氧鍵活化反應路徑與過渡狀態,以及反應當中可能額外發生的碳-氫鍵活化形式。在論文最後,藉由所有實驗數據結果,推測此催化反應的反應機構。
Aromatic arenes containing C-O linkages are a ubiquitous structural motif found in lignin biomass. In recent years, many papers have been shown about using of transition metal catalyst involved reductive C-O cleavage activation would seem as leverage for the conversion to liquid fuel and other value-added products.
In this thesis, we utilized nickel and organoaluminum reagent to do C-O bond activation. The newly type of nickel-catalyzed cross-coupling reaction can cleavage the inert C-O bond assisted by organoaluminum reagent. And we determine the scope of organoaluminum reagent that are amenable to cross-coupling with heterocyclic and naphthalene under the optimized reaction conditions. In our case, alkylation case are all in excellent yield. Finally, in our theoretical calculation, we also performed density functional study to give insights into the mechanism of Ni(dcype) catalyzed C-O bond activation of 2-methoxypyridine (PyOMe) with the assistance of organoaluminum.
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