Reactions of boron trifluoride with allylic boranes and 1-boraadamantane

The reactions of boron trifluoride with triallyl- and allyldialkylboranes represent a convenient non-catalytic approach to allyl(difluoro)boranes. The rupture of 1-boraadamantane core with BF 3 leads to 3-fluoro-7-difluoroborylmethyl-3-borabicyclo-[3.3.1]nonane derivatives.