9-BBN is prepared by the reaction of 1,5-cyclooctadiene and borane usually in ethereal solvents, for example:
The compound is commercially available as a solution in tetrahydrofuran and as a solid.
9-BBN is especially useful in Suzuki reactions.

Its highly regioselective addition on alkenes allows the preparation of terminal alcohols by subsequent oxidative cleavage with H₂O₂ in aqueous KOH.
The steric demand of 9-BBN greatly suppresses the formation of the 2-substituted isomer compared to the use of borane.
9-BBN is prepared by the reaction of 1,5-cyclooctadiene and borane usually in ethereal solvents, for example:
The compound is commercially available as a solution in tetrahydrofuran and as a solid. 9-BBN is especially useful in Suzuki reactions.
Its highly regioselective addition on alkenes allows the preparation of terminal alcohols by subsequent oxidative cleavage with H₂O₂ in aqueous KOH. The steric demand of 9-BBN greatly suppresses the formation of the 2-substituted isomer compared to the use of borane.
9-Borabicyclo(3.3.1)nonane