Abstract
The synthetic and mechanistic aspects of highly energetic pyridine carbenes (PyCs) are discussed for understanding the regio- and stereoselective functionalization of pyridine at rare sites by applying different C-H bond activation methods. Various transition metals and metalloids are used for the generation of corresponding PyCs followed by the formation of substituted pyridines. The functionalization of most focused 2,3,4- positions of pyridine is described with several applications in the synthesis of drugs and natural products, in single-walled carbon nanotubes (SWNTs) and in dye-sensitized solar cells (DSSCs) as the energy storage compounds.
Keywords: Pyridene carbene, Pyrid-x-ylidene, transition metal catalysis, Chichibabin reaction, triaryl-2-pyridylidine, dye-sensitized solar cells.
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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