2,6-Bis(pyrazol-1-yl)pyridine cobalt-catalyzed high selective hydroboration of alkenes

•A series of novel 2,6-bis(pyrazol-1-yl)pyridine Cobalt complexes have been synthesized and applied to catalyze the highly selective hydroboronation of alkenes.•These catalysts function effectively under mild, solvent-free conditions, demonstrating contrasting selectivities: Markovnikov-type selectivity for vinylarenes and anti-Markovnikov-type selectivity for alkyl alkenes. A novel series of cobalt (II) catalysts featuring 2,6-bis(pyrazol-1-yl)pyridine ligands have been synthesized for the purpose of achieving high selectivity in hydroboration reactions of alkenes. These catalysts function effectively under mild, solvent-free conditions, demonstrating contrasting selectivities: Markovnikov-type selectivity for vinylarenes and anti-Markovnikov-type selectivity for alkyl alkenes. This dual-selectivity system offers a versatile platform for the controlled hydroboration of a diverse range of alkene substrates. [Display omitted]