Question

Write a short note on Sandmeyer’s reaction. 

Answer 1

Sandmeyer’s reaction: 
When a primary aromatic amine, dissolved or suspended in aqueous mineral acid, is treated with sodium nitrite, a diazonium salt is formed. Mixing solution of freshly prepared diazonium salt with cuprous chloride or cuprous bromide, results in the replacement of the diazonium group by - Cl or - Br. This reaction is known as Sandmeyer' s reaction

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