Organic Chemistry Portal



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:

Z. Wang, T. Song, Y. Yang, Synlett, 2019, 30, 319-324.

DOI: 10.1055/s-0037-1610353 (free Supporting Information)

see article for more reactions


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.

see article for more examples

Key Words

cobalt catalysis, heterogeneous catalysis, benzimidazoles, phenylenediamines, aldehydes, coupling reaction

ID: J72-Y2019