In this work scientific articles and reviews about direct C-H functionalization via transition-metal-catalyzed activation of C─H bonds were examined. Mechanisms of direct arylation, alkylation and alkenylation with ruthenium, palladium and 3d transition metal catalysts were described. Also, topics of hexaarylbenzene derivatives and imidazolyl group as ligand were discussed. At the end, the plan of work, I was supposed to do in a laboratory if not for epidemic of COVID-19, was written about.
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