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Sandmerys reaction

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Sandmerys reaction

Posted by Keshav Joshi 3 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 3 years, 6 months ago

The Cl-,Br- and CN- nucleophiles can easily be introduced in the benzene in the presence of Cu(I) ion. This reaction is called sand Meyer's reaction.

It is used to synthesize aryl halides from aryl diazonium salts. It is an example of a radical-nucleophilic aromatic substitution.

When a primary aromatic amine, dissolved or 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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