Identify the position where electrophilic aro | vedclass

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Question

(B) The molecule contains an acetamido group $(-NHCOCH_3)$ and a methyl group $(-CH_3)$ attached to the benzene ring.Both groups are ortho/para direct

Vedclass · Accepted Answer

$B$

Vedclass · Answer

(B) The molecule contains an acetamido group $(-NHCOCH_3)$ and a methyl group $(-CH_3)$ attached to the benzene ring.Both groups are ortho/para directing.The $-NHCOCH_3$ group is a stronger activating group due to the $+M$ effect of the nitrogen lone pair compared to the $+I$ and hyperconjugation effect of the $-CH_3$ group.Therefore,the substitution is primarily directed by the $-NHCOCH_3$ group.Position $A$ is ortho to the $-NHCOCH_3$ group but is sterically hindered by the adjacent $-CH_3$ group.Position $C$ is ortho to the $-NHCOCH_3$ group and is less sterically hindered.Position $B$ is para to the $-NHCOCH_3$ group.Generally,para-substitution is preferred over ortho-substitution due to lower steric hindrance.Thus,position $B$ is the most favourable site for $EAS$.

Identify the position where electrophilic aromatic substitution $(EAS)$ is most favourable.

Similar Questions

Explain the mechanism for the nitration of benzene.

If $P$ and $S$ are toluene,identify $Q$ and $R$ respectively in the following reaction sequence:
$P$ $\xrightarrow{KMnO_4/KOH} Q$ $\xrightarrow{\text{soda lime}, \Delta} R$ $\xrightarrow{CH_3Cl, \text{anhydrous } AlCl_3} S$

Benzene on nitration gives nitrobenzene in the presence of a mixture of $HNO_3$ and $H_2SO_4$,where:

Which of the following reactions is correct?

Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is:
$-COOCH_3$,$-NHCOCH_3$,$-NHCH_3$,$-CN$,$-OCH_3$

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