Consider the tetracyclic aromatic compound drawn below,with rings labelled as I,II,III,and IV.Which of the four rings is most reactive in electrophilic aromatic substitution?

Question

Quizplus · Accepted Answer

Ring II is the most reactive in electrophilic aromatic substitution because it has two electron-withdrawing groups (NO2) attached to it, which make it more electron-deficient compared to the other rings. This makes it more susceptible to attack by electrophiles. Rings I and IV also have electron-withdrawing groups attached to them, but only one each, making them less reactive than Ring II. Ring III has no electron-withdrawing groups attached to it, making it the least reactive.

Consider the Tetracyclic Aromatic Compound Drawn Below,with Rings Labelled as I,II,III,and