At present, almost all synthetic nitrogen-containing organic compounds need industrial ammonia synthesis (NH3). However, the traditional Haber-Bosch Process is extremely harsh. It is estimated that the annual energy consumption accounts for about 2% of the global energy consumption, consumes about 25% of fossil resources, and produces a lot of greenhouse gases. Therefore, it is one of the important ways to directly, efficiently and gently convert nitrogen into nitrogen-containing organic compounds without NH3. However, so far, there are few related literature reports, and the catalytic reaction system has not been realized (see Chinese review: direct synthesis of nitrogen-containing organic compounds from nitrogen, Li Jiapeng, Yin Jianhao, Yu Chao, Zhang Wenxiong, Xi Zhenfeng, Journal of Chemistry, 2017,75,733-743).
Recently, Xi Zhenfeng/Zhang Wenxiong's research group realized the process of efficiently synthesizing hydrazine derivatives by directly reacting organic substrates such as nitrogen, MeOTf and electrophilic reagents, which was promoted by rare earth metal Scandium (Sc). They isolated and characterized (N2)2? -,(N2)3? -and (N2Me2)2? -Sc intermediate, and found that CO can be effectively inserted into (N2Me2)2? -Sc of Sc intermediate? Among the N bonds, the efficient coupling of N2 and CO (scanning-promoted direct conversion of dinitrogen into hydrazine derivatives via n c bond formation. Ze-Jielv, Zhen Huang, Wen-Xiong Zhang, * and Zhen Feng Xi, * J.AM.Chem.SOC.2019,141,800) was realized. 8777）。
Rare earth metal scandium (Sc) directly converts nitrogen into nitrogen-containing organic compounds.
This work is the first time to realize the direct synthesis of nitrogen-containing organic compounds from nitrogen promoted by rare earth metals. Rare earth metals are of great significance to the development of our country, and this work shows a new way for the efficient utilization of rare earth metals. The first author of the thesis is Lu Zejie, a doctoral student. This work was strongly supported by the National Natural Science Foundation of China, Beijing National Research Center of Molecular Science and Peking University Institute of Chemistry.
