Allylic boranes are chemist’s best friends: Reactivity, applications, new opportunities

Fruitful methods for the preparation of various (poly)unsaturated, (poly)cyclic and cage organic compounds with the use of allylic type organoboranes have been developed. Allylborane reactions proceeding with the rearrangement of allylic moiety or via a direct rupture of the B–C bond (with retention) little known to the boron community are considered. Synthesis of boron containing clathrochelates and some transformations of 1-boraadamantane, a unique cage compound, are also described.