Which compound among the following is most re | vedclass

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(C) The reactivity of aromatic compounds towards electrophilic substitution depends on the electron-donating ability of the substituents attached to t

Vedclass · Accepted Answer

$2-$methylphenol

Vedclass · Answer

(C) The reactivity of aromatic compounds towards electrophilic substitution depends on the electron-donating ability of the substituents attached to the benzene ring. Groups that donate electrons via resonance (like $-OH$,$-OCH_3$,$-NHCOCH_3$) activate the ring. The $-OH$ group is a strong activating group due to the $+M$ effect,which significantly increases the electron density on the benzene ring. In $2$-methylphenol,the $-OH$ group is a strong activator,and the $-CH_3$ group is a weak activator (via hyperconjugation and $+I$ effect). Comparing the given options: $A$: $1,2$-dimethylbenzene (two weak activators). $B$: $1$-methoxy-$2$-(hydroxymethyl)benzene (one strong activator $-OCH_3$ and one deactivating/weakly activating $-CH_2OH$). $C$: $2$-methylphenol (one strong activator $-OH$ and one weak activator $-CH_3$). $D$: $N$-($2$-methylphenyl)acetamide (one moderately activating $-NHCOCH_3$ and one weak activator $-CH_3$). Among these,the $-OH$ group is the most powerful activating group,making $2$-methylphenol $(C)$ the most reactive towards electrophilic reagents.

Which compound among the following is most reactive towards electrophilic reagents?

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