Each of the five disubstituted benzenes shown below is nitrated.In which of these cases does the arrow not indicate the chief position of nitration.

Question

Quizplus · Accepted Answer

The arrow in compound III does not indicate the chief position of nitration because the major product is not formed at the position ortho to the methyl group, but rather at the meta position due to the electron withdrawing effect of the nitro group already present at the ortho position. In all the other compounds, the arrow indicates the chief position of nitration, resulting in the expected ortho or para substitution.

Each of the Five Disubstituted Benzenes Shown Below Is Nitrated