Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question
Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes3 Marks
Question
Give the reaction of chlorobenzene with Hydroxyl group.
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Answer
$\rightarrow$ Chlorobenzene can be converted into phenol by heating in aqueous sodium hydroxide solution at a temperature of $623K$ and a pressure of $300$ atmospheres.
$\rightarrow$ The presence of an electron withdrawing group $(-NO_2)$ at ortho$-$ and para$-$ positions increases the reactivity of haloarenes.
$\rightarrow$ The effect is pronounced when $(-NO_2)$ group is introduced at ortho$-$ and para positions.
However, no effect on reactivity of haloarenes is observed by the presence of electron withdrawing group at meta$-$position.
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