Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryAmines2 Marks
Question
How is aryl chloride or aryl bromide prepared by Gattermann reactions?
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Answer
The aryl chloride or bromides can also be prepared by Gattermann reactions in which diazonium salt reacts with $Cu / HCl$ or $Cu / HBr$ respectively. $\begin{aligned} & ArN _2^{+} Cl ^{-} \xrightarrow{ Cu / HCl } Ar - Cl + N _2 \uparrow \\ & ArN _2^{+} Cl ^{-} \xrightarrow{ Cu / HBr } Ar - Br + N _2 \uparrow+ Cl ^{-} \end{aligned}$
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