Abstract
C-C bond formation in a regiospecific and atom economic manner has been a challenge,
which was tried to be resolved through directing group and organometals-based C-H
activation strategy. The C-H activation and its advantages are well explored in the field of
organic chemistry, with the relevant mechanistic approach of the regioselective C-H activation
of the aryl group. Organometals like Ru, Pd, Pt, Ni, etc. have been best discovered for the
innate C-H activation where the pre-activation of the inert C-H bond was not found necessary.
In the progress of these reactions through organometals, the various forms of ruthenium have
been tried with the different directing groups as well as the substrate. Here in we are focusing
mainly on cationic ruthenium, and its use in the C-H activation. The cationic ruthenium
shows unique characteristics like reactivity with an inert substrate, which is been highlighted
here in the examples. The formation and its, mechanistic role is also exemplified with the diagrammed representation
of C-H activation and its catalytic cycle. The application of the cationic ruthenium will give complete
knowledge about cationic ruthenium and its application in C-H activation.
Graphical Abstract
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