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    首頁» 科研進展» 稀土金屬的新應用:從氮氣直接合成含氮有機物

    稀土金屬的新應用:從氮氣直接合成含氮有機物

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        目前幾乎所有人工合成含氮有機化合物都需要經過工業合成氨NH3傳統的工業合成氨過程 (Haber-Bosch Process)條件極其苛刻據推算耗能占全球能耗的2%左右,消耗25%的化石資源,并且產生大量溫室氣體。因此,將氮氣直接高效、溫和地轉化為含氮有機化合物,而不經過NH3, 解決以上問題的重要途徑之一迄今相關文獻報道很少, 催化反應體系還沒有實現見中文綜述:從氮氣直接合成含氮有機化合物,李嘉鵬 殷劍昊 俞超 張文雄 席振峰,化學學報 2017, 75, 733-743

     最近,席振峰/張文雄課題組實現了由稀土金屬鈧(Sc)促進的,直接由氮氣、MeOTf和親電試劑等有機底物反應高效合成肼衍生物的過程。他們分離和表征了(N2)2?-, (N2)3?-和(N2Me2)2?-Sc中間體,并發現CO能有效插入(N2Me2)2?-Sc中間體的Sc?N鍵中,實現了N2與CO的高效偶聯(Scandium-Promoted Direct Conversion of Dinitrogen into Hydrazine Derivatives via N?C Bond Formation. Ze-Jie Lv, Zhe Huang, Wen-Xiong Zhang,* and Zhenfeng Xi,* J. Am. Chem. Soc. 2019, 141, 8773?8777)。

     

     

    該工作首次實現了稀土金屬促進的從氮氣直接合成含氮有機化合物。稀土金屬對于我國的發展具有特別的重要意義,該工作對于稀土金屬的高效利用展示了一個新途徑。論文的第一作者為博士研究生呂澤杰。該工作得到了國家自然科學基金、北京分子科學國家研究中心和北京大學化學學院的大力支持。

     

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