Q.what is coupling reaction of diazonium salt?
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In alkaline media, diazonium salt can react with most primary and secondary amines that exist as a free base and produce triazene. This chemical reaction is called azo N-coupling or the synthesis of azoamines.
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Coupling reaction: In this reaction, arene diazonium salt reacts with aromatic amino compound (in acidic medium) or a phenol (in alkaline medium) to form brightly coloured azo compounds. The reaction generally takes place at para position to the hydroxy or amino group.
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