The increasing order of the rate of nucleophi | vedclass

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(B) The rate of nucleophilic aromatic substitution is increased by the presence of electron-withdrawing groups $(EWG)$ on the benzene ring, as they st

Vedclass · Accepted Answer

$II < I < III < IV$

Vedclass · Answer

(B) The rate of nucleophilic aromatic substitution is increased by the presence of electron-withdrawing groups $(EWG)$ on the benzene ring, as they stabilize the intermediate carbanion (Meisenheimer complex).$II$ has a $-OCH_3$ group, which is an electron-donating group $(EDG)$ via resonance, thus it decreases the rate of nucleophilic substitution compared to chlorobenzene $(I)$.$III$ has one $-NO_2$ group (a strong $EWG$), which increases the rate compared to $I$.$IV$ has two $-NO_2$ groups, which further increase the rate compared to $III$.Therefore, the increasing order of reactivity is: $II < I < III < IV$.

The increasing order of the rate of nucleophilic substitution reaction for the following compounds is:

Similar Questions

$C_{6}H_{6} + CH_{3}Cl \xrightarrow{\text{Anhy. } AlCl_{3}} C_{6}H_{5}CH_{3} + HCl$
The name of the above reaction is:

Rank the following compounds in order of decreasing rate of reaction with alkoxide ion $(CH_3CH_2O^{-})$ in a nucleophilic aromatic substitution reaction:
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Which is the best synthesis of $1-$methoxy$-2,4-$dinitrobenzene?

Identify the major product formed in the following reaction.
$Chlorobenzene \xrightarrow{Cl_2, \text{ Anhydrous } FeCl_3} \text{Product}$

If $B$ is the major product,then identify $B$.

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