Among the following compounds (I-III),the cor | vedclass

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(A) Electrophilic substitution reaction is favored by the presence of electron-donating groups on the benzene ring,which increase the electron density

Vedclass · Accepted Answer

$I > II > III$

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(A) Electrophilic substitution reaction is favored by the presence of electron-donating groups on the benzene ring,which increase the electron density and activate the ring. Conversely,electron-withdrawing groups decrease the electron density and deactivate the ring.$I$: Anisole $(C_6H_5OCH_3)$ contains a $-OCH_3$ group,which is a strong electron-donating group due to the resonance effect ($+R$ effect),making it highly reactive.$II$: Benzene $(C_6H_6)$ has no substituent,serving as the reference.$III$: Nitrobenzene $(C_6H_5NO_2)$ contains a $-NO_2$ group,which is a strong electron-withdrawing group due to the $-R$ and $-I$ effects,making it the least reactive.Therefore,the order of reactivity is $I > II > III$.

Among the following compounds $(I-III)$,the correct order of reactivity towards electrophilic substitution reaction is:

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