remain the major challenges. Herein, the first [Cl2Ru(p-cymene)]2-catalyzed direct monoarylation of unactivated C(sp3)–H bonds of 8-methyl quinolines with arylboronic acids to synthesize diarylmethane compounds is presented. The transformation shows a broad substrate scope with high chemoselectivity for the synthesis of 8-benzyl quinolines. In the preliminary mechanistic studies, control experiments, deuterium
Herein Rh(III)-catalyzed selective mono-arylation and diarylation (symmetrical and unsymmetrical) of 8-methylquinolines with organoboron reagents is disclosed. The selective monoarylation of primary C(sp 3 )-H bond is achieved by using the 7-substituted 8-methylquinolines or by changing the quantity of aryl boronic acids. The method is also applicable for the arylation of 2-ethylpyridine, and heteroarylation