Carefully consider the effect of the nitro groups on the stability of the intermediates involved as you decide which product(s)the reaction shown provides.

Question

Quizplus · Accepted Answer

The nitro groups on the aromatic ring are electron-withdrawing, meaning they stabilize positive charge on adjacent atoms. When the alkene is protonated, a carbocation intermediate is formed. The nitro groups stabilize this intermediate, making it more stable than the alternative intermediate that would form if there were no nitro groups. This makes it likely that the reaction will proceed through the pathway that leads to product B.

Carefully Consider the Effect of the Nitro Groups on the Stability