Question
How will you obtain monobromobenzene from aniline?
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Answer
Sandmeyer’s reaction as explained below when a primary aromatic amine, dissolved or a suspended in cold aqueous mineral acid, is treated with sodium nitrite, a diazonium salt is formed. Mixing the solution of freshly prepared diazonium salt with cuprous chloride or cuprous bromide results in the replacement of the diazonium group by —Cl or —Br
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