氮气
碳纤维
化学
金属
过渡金属
转移加氢
硝基
无机化学
有机化学
催化作用
材料科学
钌
复合数
复合材料
烷基
作者
Xiaomei Lu,Jie He,Liang Huang,Jingzhong Qin,Yuandie Ma,Xianxiang Liu,Wenguang Zhao,Bing Liu,Zehui Zhang
标识
DOI:10.1016/j.apcatb.2022.122277
摘要
Transition metal catalysts are commonly used for chemical reactions, especially for transfer hydrogenation reactions. From the viewpoints of green and sustainable chemistry, it is highly demanded to develop metal-free catalytic systems. Herein, oxygen-containing groups modified nitrogen-doped carbon catalysts were discovered to be robust for the transfer hydrogenation reaction between nitroarenes and saturated N-heterocyclic compounds, achieving high yields of anilines and unsaturated N-heterocyclic. Control experiments and characterization results indicate that pyridinic N and carbonyl groups are the active sites. Furthermore, DFT calculation indicate that pyridinic N serves the role in the capture of the H atom from the N−H site in N-heterocycles and carbonyl group assists to capture the H atom from the adjacent carbon site. The as-formed H• species are then transferred to nitro groups in nitroarenes to generate anilines. This amalgamation of multiple active sites reveals opportunities for developing modified metal-free carbon catalysts for extensive applications.
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