Like enolates (Q740), enols can also act as nucleophiles and make new bonds at the alpha position.
Let's go through the mechanism for how this happens, using alpha bromination as our example.
In the reaction below, the carbonyl form is in equilibrium with its enol form (Q738), which can then attack molecular bromine.
Complete the structure of the protonated carbonyl, and show the curved arrows that transform it into the final carbonyl product.
