Arrange the compounds in order of increasing reactivity toward electrophilic aromatic substitution (lowest first) .

Question

Arrange the compounds in order of increasing reactivity toward electrophilic aromatic substitution (lowest first).

Quizplus · Accepted Answer

The electron-withdrawing group (EWG) nitro (-NO2) is the strongest activating group, making compound III the most reactive. The methyl (-CH3) group is weakly activating, making compound I slightly more reactive than compound IV, which has a deactivating halogen (-Cl) group. Compound II has a strong deactivating nitro group (-NO2) and is the least reactive toward electrophilic aromatic substitution. Therefore, the correct order of increasing reactivity is III < I < IV < II.

Arrange the Compounds in Order of Increasing Reactivity Toward Electrophilic