Editing Hydroboration–oxidation reaction (section)

===Oxidation step===
In the second step of the reaction sequence, the nucleophilic [[hydroperoxide]] [[anion]] attacks the boron atom. Alkyl migration to oxygen gives the alkyl borane with [[Walden inversion|retention]] of stereochemistry (in reality, the reaction occurs via the trialkyl [[borate]] B(OR)<sub>3</sub>, rather than the monoalkyl borinic ester BH<sub>2</sub>OR).

[[File:Hydroboration-oxidation-mechanism.svg|thumb|400px|center|Hydroboration–oxidation mechanism]]
The 'H' atom in the reaction comes from B<sub>2</sub>H<sub>6</sub>, the 'O' atom comes from hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) whereas the O attached 'H' atom comes from the solvent (refer mechanism).