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Diazonium ions react with phenols and amines in acidic or slightly alkaline solutions to form azo compounds in a reaction called diazocoupling. The reaction proceeds most rapidly with phenols at pH < 10, where phenoxide ions are present, and with amines at pH 5-7, where diazonium and amine concentrations are maximal. Coupling occurs mainly at the para position of the aromatic substrate if it is available, otherwise at ortho positions.
- Author
- janmanchi
- Language
- EN