Abstract
N-Heterocyclic carbenes (NHCs) as versatile nucleophilic organocatalysts have been extensively studied and also widely applied in organic reactions. The types of organic reactions catalyzed by N-heterocyclic carbenes are broad including benzoin condensation, Stetter reaction, a3-to-d3 umpolung, ring-opening reaction, transesterification, and ring expansion polymerization. This review reports recent developments in the synthesis of heterocycles (such as lactams, lactones, chromones, and benzofuranones) catalyzed by N-heterocyclic carbenes.
Keywords: Benzofuranone, chromone, heterocycles, lactam, lactone, N-heterocyclic carbene, organocatalyst.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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