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(C) The $-CH_3$ group is an $o, p$-directing group. In $m$-xylene ($1,3$-dimethylbenzene),the positions available for electrophilic substitution are $

Vedclass · Accepted Answer

$4-$bromo$-1,3-$dimethylbenzene and $6-$bromo$-1,3-$dimethylbenzene

Vedclass · Answer

(C) The $-CH_3$ group is an $o, p$-directing group. In $m$-xylene ($1,3$-dimethylbenzene),the positions available for electrophilic substitution are $2, 4, 5,$ and $6$.$1$. The position between the two $-CH_3$ groups (position $2$) is sterically hindered,so no significant substitution occurs there.$2$. The $4$ and $6$ positions are equivalent and are ortho to one $-CH_3$ group and para to the other,making them the most favorable sites for substitution.$3$. The $5$ position is meta to both $-CH_3$ groups and is less activated.Therefore,the major products formed are $4$-bromo-$1,3$-dimethylbenzene and $6$-bromo-$1,3$-dimethylbenzene (which are equivalent due to symmetry) or substitution at the $4$ and $6$ positions relative to the methyl groups.

What products are formed when the following compound is treated with $Br_2$ in the presence of $FeBr_3$?

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