MIGRATION OF ALKYL-GROUPS FROM ZIRCONIUM TO VARIOUS HALOBORANES

The hydrozirconations of acyclic alkenes are known to yield the dicyclopentadienyl-1-alkyl-zirconium chlorides regioselectively and in high yields. These alkyl groups may readily be transmetallated to the haloboranes forming regioisomeric pure alkylboranes in good yields. In principle, this migration reaction combines the facile hydrozirconation and unique isomerization reactions of organozirconiums with the established chemistry of boron, expanding the utility of both metals for use in organic synthesis.