# What is hydroboration oxidation in alkenes?

Jul 20, 2015

Hydroboration-oxidation is a method of making alcohols from alkenes.

#### Explanation:

It involves the addition of ${\text{BH}}_{3}$ to an alkene, followed by oxidation with alkaline hydrogen peroxide to form an alcohol.

The reaction is a Markovnikov addition of ${\text{BH}}_{3}$ to the alkene

On oxidation of the boron intermediate, the $\text{OH}$ group ends up on the less substituted carbon.

This is opposite to the position of the $\text{OH}$ group in the acid-catalyzed Markovnikov addition of water to an alkene, so the reaction is often called the anti-Markovnikov addition of water to an alkene.