A MoO2/Mo2C hybrid catalyst supported on N-doped carbon (Mo2C/MoO2@NC) was successfully prepared, which is featured with moderate mesoporosity, uniform metallic nanoparticles, and rich oxygen-vacancies. It showed excellent efficiency (99% imine yield) and good reusability for oxidative self-coupling of benzylamine to N-benzylbenzaldimine under mild conditions (85 °C, 3 h, 1 bar O2). In addition, the catalyst Mo2C/MoO2@NC also exhibited a universal applicability for oxidative coupling of other primary amines to imines with impressive conversion and satisfying target product selectivity. This method provides an efficient and environment friendly strategy for catalytic synthesis of complex imines from primary amines.
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This work was supported by the National Natural Science Foundations of China (22068013), the Key Research and Development Program of Jiangxi Province (20202BBGL73118), and the Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University (KFSEMC-202209). W.T.C. was supported by the Scientific Research Foundation of graduate innovation of Jiangxi Province Education Department (YC2021-B064).
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Chen, WT., Han, S., Dai, ZH. et al. Porous nitrogen-doped carbon supported MoO2/Mo2C hybrid catalyst for efficient oxidative coupling of primary amines to imines. J Porous Mater (2022). https://doi.org/10.1007/s10934-022-01375-2
- Oxidative self-coupling
- Molybdenum carbide
- Oxygen vacancy