Development of Cu-catalyzed asymmetric addition of boron to olefin

The Cu-catalyzed asymmetric addition of borons to olefins is an efficient method to the construct chiral C-B bonds and has therefore gained much attention over recent years. This review describes recent research progress concerning Cu-catalyzed asymmetric additions of borons to olefins on the view of the types of olefin substrates and reactions. Such reactions include hydroborations, cascade reactions, difunctionalization reactions, and their associated mechanisms and developments. Additionally, research trends of this area are also discussed.