1-Chloro-4-nitrobenzene,1-Chloro-2,4-dinitrob | vedclass

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(B) The presence of electron-withdrawing groups like $-NO_2$ at ortho and para positions increases the reactivity of haloarenes towards nucleophilic s

Vedclass · Accepted Answer

$X = (i) \ NaOH, 443 \ K, (ii) \ H^{+}$; $Y = (i) \ NaOH, 368 \ K, (ii) \ H^{+}$; $Z = 	ext{Warm } H_2O$

Vedclass · Answer

(B) The presence of electron-withdrawing groups like $-NO_2$ at ortho and para positions increases the reactivity of haloarenes towards nucleophilic substitution. As the number of $-NO_2$ groups increases,the reaction conditions become milder.$1.$ $1$-$Chloro$-$4$-$nitrobenzene$ requires $(i) \ NaOH, 443 \ K, (ii) \ H^{+}$ to form $4$-$nitrophenol$.$2.$ $1$-$Chloro$-$2,4$-$dinitrobenzene$ requires $(i) \ NaOH, 368 \ K, (ii) \ H^{+}$ to form $2,4$-$dinitrophenol$.$3.$ $1$-$Chloro$-$2,4,6$-$trinitrobenzene$ reacts with just $	ext{Warm } H_2O$ to form $2,4,6$-$trinitrophenol$ (picric acid).

$1$-$Chloro$-$4$-$nitrobenzene$,$1$-$Chloro$-$2,4$-$dinitrobenzene$ and $1$-$Chloro$-$2,4,6$-$trinitrobenzene$ are transformed to corresponding phenols with the reagents $X$,$Y$,$Z$ respectively. What are $X$,$Y$,$Z$?

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