Catalytic carboborations

Transition‐metal‐catalyzed carboborations, in which organic and boryl groups are introduced concomitantly to unsaturated organic molecules, have been developed. Direct carboborations, which proceed via activation of B–C bonds of cyanoboranes and alkynylboranes, and transmetalative carboborations, in which activation of B–Cl bonds is followed by transmetalation from organotin and organozirconium reagents, are overviewed. In addition, as representative results and mechanistic considerations, the scientific background and a personal view behind the study are also described.