Methodologies for the regioselective formation of C (sp2)–C (sp2) linkages are mainly based on transition-metal-catalyzed coupling reactions between organometallic reagents and organic (pseudo) halides.[1, 2] The organometallic compounds are often not commercially available and their use gives rise to the formation of undesired by-products. Accordingly, focus has shifted to direct arylation reactions through cross-coupling of CÀH bonds as an ...
