Additive- and Oxidant-Free Expedient Synthesis of Benzimidazoles Catalyzed by Cobalt Nanocomposites on N-Doped Carbon
Zhaozhan Wang, Tao Song, Yong Yang*
*Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, 266101, P. R. of China, Email: yangyongqibebt.ac.cn
Z. Wang, T. Song, Y. Yang, Synlett, 2019, 30, 319-324.
DOI: 10.1055/s-0037-1610353 (free Supporting Information)
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A highly recyclable nonnoble cobalt nanocomposite catalyzed the coupling of phenylenediamines and aldehydes to provide a wide range of biologically active benzimidazoles in high yields with good functional-group tolerance under additive- and oxidant-free conditions. The catalyst can be easily recycled for successive uses.
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cobalt catalysis, heterogeneous catalysis, benzimidazoles, phenylenediamines, aldehydes, coupling reaction