In the following reaction sequence,the major | vedclass

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(A) $1$. The starting material is $p$-toluidine ($4$-methylaniline). $2$. Reaction with acetic anhydride $(Ac_2O)$ performs acetylation of the amino g

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(A) $1$. The starting material is $p$-toluidine ($4$-methylaniline). $2$. Reaction with acetic anhydride $(Ac_2O)$ performs acetylation of the amino group to form $N$-($4$-methylphenyl)acetamide (compound $A$). $3$. The acetamido group $(-NHCOCH_3)$ is an ortho/para directing group. Since the para position is already occupied by the methyl group,electrophilic bromination with $Br_2$ in acetic acid $(AcOH)$ occurs at the ortho position relative to the acetamido group. $4$. The major product $B$ is $N$-($2$-bromo$-4-$methylphenyl)acetamide.

In the following reaction sequence,the major product $B$ is:

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