Nickel-catalyzed (hetero)aryl borylations: an update

Aromatic organoboron compounds serve as important intermediates in synthetic organic chemistry. While the traditional electrophilic borylations using aromatic lithium or magnesium reagents had several limitations, transition metal catalyzed borylations emerged as a promising method. In recent years, borylation reactions catalyzed by Ni have gained great attention due to its enormous importance as a cheaper and less toxic alternative to Pd catalysts. The present review focuses on the recent developments in the arena of Ni catalyzed (hetero)aryl borylations after 2013.