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Versatile borylations of C(sp2)−H and C(sp3)−H were achieved with ruthenium(II) biscarboxylate complexes. The robust nature of the ruthenium(II) catalyst enabled C(sp3)−H borylation on pyrrolidines, piperidines, and azepanes with ample scope and excellent positional selectivity control. [ABSTRACT FROM AUTHOR]

The well-characterized ruthenium(II) biscarboxylate complex [Ru(O2CMes)2(p-cymene)] enabled versatile direct (hetero)arylations of C(sp³)-H bonds with low (co)catalyst loading and ample substrate scope. Detailed mechanistic studies provided strong support for a facile and reversible C(sp³)-H bond metalation. [ABSTRACT FROM AUTHOR]

Direct synthesis of condensed triazoles from diverse sulfamidates by ring opening of sulfamidates with sodium azide followed by one-pot propargylation and cycloaddition furnished title compounds. The methodology in general has been demonstrated on diverse sulfamidates derived from amino acids, amino acid derivatives, and carbohydrates to obtain diverse triazole fused scaffolds. In one example, a condensed triazole containing amino acid has been synthesized by ring opening of a sulfamidate derivative with propargyl amine. [ABSTRACT FROM AUTHOR]

Computational studies on decarboxylative C-H alkenylations provided key insights into the solvent-robust nature of C-H activation/decarboxylation domino reactions. These properties were exploited for ruthenium(II)-catalyzed C-H alkylations by a decarboxylative process with ample scope under copper-free and silver-free reaction conditions., (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Versatile borylations of C(sp 2 )-H and C(sp 3 )-H were achieved with ruthenium(II) biscarboxylate complexes. The robust nature of the ruthenium(II) catalyst enabled C(sp 3 )-H borylation on pyrrolidines, piperidines, and azepanes with ample scope and excellent positional selectivity control., (© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Ruthenium(II) bis(carboxylate)s proved highly effective for two decarboxylative C-H alkenylation strategies. The decarboxylation proceeded efficiently at rather low temperatures. The unique versatility of the decarboxylative ruthenium(II) catalysis is reflected in the oxidative olefinations with alkenes as well as the redox-neutral hydroarylations of alkynes., (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)