Allylic diboranes

Abstract
The synthesis and chemical properties of a series of novel unsatu- rated diboranes L-Q with both boron atoms in allylic positions are described. Some new reactions of allylboranes, presented in the second section, proceed either with rearrangement (2rrt2n+2ul or with retention of configuration of the allylic fragment. Convenient methods for the preparation of allyl- and diallyloxiranes, homoallylic alcohols and thiols, as well as an approach for designing cyclic structures via allylboranes are suggested.

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