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(A) The nucleophilic aromatic substitution reaction of aryl halides with $NaOH$ depends on the presence of electron-withdrawing groups $(-NO_2)$ on th

Vedclass · Accepted Answer

$A-IV, B-III, C-II, D-I$

Vedclass · Answer

(A) The nucleophilic aromatic substitution reaction of aryl halides with $NaOH$ depends on the presence of electron-withdrawing groups $(-NO_2)$ on the ring.$A$. Chlorobenzene requires harsh conditions: $(a)$ $NaOH, 623 \ K, 300 \ atm$; $(b)$ $H_3O^+$ $(IV)$.$B$. $1$-Chloro-$4$-nitrobenzene has one $-NO_2$ group,requiring milder conditions: $(a)$ $NaOH, 443 \ K$; $(b)$ $H_3O^+$ $(III)$.$C$. $1$-Chloro-$2,4$-dinitrobenzene has two $-NO_2$ groups,requiring even milder conditions: $(a)$ $NaOH, 368 \ K$; $(b)$ $H_3O^+$ $(II)$.$D$. $1$-Chloro-$2,4,6$-trinitrobenzene has three $-NO_2$ groups,which activate the ring significantly,allowing substitution with just warm $H_2O$ $(I)$.Thus,the correct match is $A-IV, B-III, C-II, D-I$.

List-$I$ Conversion	List-$II$ Reagents,Conditions used
$A$. Chlorobenzene $\rightarrow$ Phenol	$I$. Warm,$H_2O$
$B$. $1$-Chloro-$4$-nitrobenzene $\rightarrow$ $4$-Nitrophenol	$II$. $(a)$ $NaOH, 368 \ K$; $(b)$ $H_3O^+$
$C$. $1$-Chloro-$2,4$-dinitrobenzene $\rightarrow$ $2,4$-Dinitrophenol	$III$. $(a)$ $NaOH, 443 \ K$; $(b)$ $H_3O^+$
$D$. $1$-Chloro-$2,4,6$-trinitrobenzene $\rightarrow$ $2,4,6$-Trinitrophenol	$IV$. $(a)$ $NaOH, 623 \ K, 300 \ atm$; $(b)$ $H_3O^+$

Similar Questions

How will you convert benzene into:
$(i)$ $p-nitrobromobenzene$
$(ii)$ $m-nitrochlorobenzene$
$(iii)$ $p-nitrotoluene$
$(iv)$ acetophenone

The major product of the reaction is:

The set of compounds in which the reactivity of the halogen atom in ascending order is:

Rank the following compounds in order of decreasing rate of reaction with alkoxide ion $(CH_3CH_2O^{-})$ in a nucleophilic aromatic substitution reaction:
$1$. $1$-bromo-$2$-nitrobenzene
$2$. $1$-bromo-$3$-nitrobenzene
$3$. $1$-bromo-$2,4$-dinitrobenzene
$4$. $1$-bromo-$3,4$-dinitrobenzene

Which of the following reactions is not correctly represented?

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