Question

what is sandmeyer reaction?explain

Answer 1

The Sandmeyer reaction is a chemicalreaction used to synthesize aryl halides from aryl diazonium salts. ... The reactionis a method for substitution of an aromatic amino group via preparation of its diazonium salt followed by its displacement with a nucleophile, often catalyzed by copper(I) salts.

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Answer 2

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Sandmeyer Reaction



The substitution of an aromatic amino group is possible via preparation of its diazonium salt and subsequent displacement with a nucleophile (Cl-, I-, CN-, RS-, HO-). Many Sandmeyer Reactions proceed under copper(I) catalysis, while the Sandmeyer-type reactions with thiols, water and potassium iodide don't require catalysis.

The Sandmeyer Reaction is a very important transformation in aromatic chemistry, because it can result in some substitution patterns that are not achievable by direct substitution.

Fluorination is possible by using the related  Schiemann Reaction.