研究生: |
林立梓 |
---|---|
論文名稱: |
2-氫茚1,3-二酮和2,3-丁二酸乙酯之磷催化[3+2]環化反應 |
指導教授: | 陳焜銘 |
學位類別: |
碩士 Master |
系所名稱: |
化學系 Department of Chemistry |
論文出版年: | 2013 |
畢業學年度: | 101 |
語文別: | 中文 |
論文頁數: | 46 |
中文關鍵詞: | [3+2]環化反應 、螺五員環 |
論文種類: | 學術論文 |
相關次數: | 點閱:110 下載:1 |
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本論文以磷催化進行[3+2]環化反應,得到具位向選擇性的螺五員環衍生物。1,3-氫茚二酮是重要官能基,其衍生分子具有生物活性。將1,3-氫茚二酮與芳香醛,進行domino Knoevenagel condensation,得到2-芳香亞甲基-1,3-氫茚二酮,作為探討反應的起始物。在室溫、氮氣環境下,2-芳香亞甲基-1,3-氫茚二酮與2,3-丁二酸乙酯溶於甲苯,以三苯基膦為催化劑,進行[3+2]環化反應,得到螺五員環。不論是拉電子基或是缺電子基的起始物,得到的產物都具有良好的位向選擇性(可達5:1),並有63-99%的產率。據我們所知,這是第一個發表運用2-芳香亞甲基-1,3-氫茚二酮和2,3-丁二酸乙酯合成官能化五員環。
Using phosphine catalyzed [3+2] annulation to obtain functionalized spirocyclic
cyclopentenes which has regioselectivity. 1,3-indandione is an important constituent
functional group of natural product. And some derived molecules have biological
activity. 2-arylidene-1,3-indandione can be obtained by domino Knoevenagel
condensation of 1,3-indandione and aromatic aldehyde in a single one-pot operation.
At room temperature and under nitrogen atmosphere, 2-arylidene-1,3-indandione with
ethyl-2,3-butadienoate dissolved in toluene, and catalyzed by triphenylphosphine,
then doing [3+2] annulation. The starting materials are either electron-donating or
electron-withdrawing group, the products both have good regioselectivity (up to 5:1)
and yields (63-99%). To the best of our knowledge this is the first report for the
synthesis of functionalized cyclopentenes using 2-arylidene-1,3-indandione and
ethyl-2,3-butadienoate.
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