Which of the following are deactivating groups?
$-OH, -COCH_3, -NO_2, -NH_2, -Cl, -Br, -NHCOCH_3, -COOH$
$-OH, -COCH_3, -NO_2, -NH_2, -Cl, -Br, -NHCOCH_3, -COOH$
(D) In electrophilic aromatic substitution,groups are classified based on their effect on the electron density of the benzene ring.
$1$. Activator groups (electron-donating): $-OH, -NH_2, -NHCOCH_3$.
$2$. Deactivator groups (electron-withdrawing): $-COCH_3, -NO_2, -Cl, -Br, -COOH$.
$1$. Activator groups (electron-donating): $-OH, -NH_2, -NHCOCH_3$.
$2$. Deactivator groups (electron-withdrawing): $-COCH_3, -NO_2, -Cl, -Br, -COOH$.
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Similar Questions
Identify $A$ in the following reaction.
$A \text{ (excess)} + \text{Acetyl chloride (excess)}$ $\xrightarrow[AlCl_3]{\text{Anhydrous}} 1-\text{Chloroacetophenone} + 4-\text{Chloroacetophenone}$
$A \text{ (excess)} + \text{Acetyl chloride (excess)}$ $\xrightarrow[AlCl_3]{\text{Anhydrous}} 1-\text{Chloroacetophenone} + 4-\text{Chloroacetophenone}$
$STATEMENT-1$: Bromobenzene upon reaction with $Br_2 / Fe$ gives $1,4$-dibromobenzene as the major product.
$STATEMENT-2$: In bromobenzene,the inductive effect of the bromo group is more dominant than the mesomeric effect in directing the incoming electrophile.
$STATEMENT-2$: In bromobenzene,the inductive effect of the bromo group is more dominant than the mesomeric effect in directing the incoming electrophile.
Why does the presence of a $-NO_2$ group at the $o,p$-positions increase the reactivity of haloarenes towards nucleophilic substitution reactions?
Medium
View SolutionThe compound $C_{7}H_{8}$ undergoes the following reactions:
$C_{7}H_{8}$ $\xrightarrow{3Cl_{2} / \Delta} A$ $\xrightarrow{Br_{2} / Fe} B$ $\xrightarrow{Zn / HCl} C$
The product '$C$' is
$C_{7}H_{8}$ $\xrightarrow{3Cl_{2} / \Delta} A$ $\xrightarrow{Br_{2} / Fe} B$ $\xrightarrow{Zn / HCl} C$
The product '$C$' is
Which chloroderivative of benzene among the following would undergo hydrolysis most readily with aqueous $NaOH$ to furnish the corresponding hydroxy derivative?
Medium
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