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(A) $1$. The given molecule is a bicyclic system where one ring is attached to an $-NH-$ group (an activating group due to the lone pair on nitrogen)

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(A) $1$. The given molecule is a bicyclic system where one ring is attached to an $-NH-$ group (an activating group due to the lone pair on nitrogen) and the other ring is attached to a $-C(=O)-$ group (a deactivating group).$2$. Electrophilic aromatic substitution, such as bromination using $Br_2/Fe$, occurs preferentially on the more electron-rich ring.$3$. The ring containing the $-NH-$ group is activated, making it more susceptible to electrophilic attack.$4$. The $-NH-$ group is ortho/para directing. Due to steric hindrance from the methyl group at the ortho position, the bromination occurs at the para position relative to the $-NH-$ group.$5$. Thus, the bromine atom will be substituted at the para position of the activated ring, which corresponds to the structure shown in option $A$.

The major product obtained when the following compound is treated with $Br_2/Fe$ is:

Similar Questions

Explain why the following systems are not aromatic?

Among the following,the aromatic compounds are:
$(A)$ Heptafulvene
$(B)$ Benzene
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Choose the correct answer from the following options:

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