Electrophilic Substitution with Arenediazonium Salts Diazo Coupling

ELECTROPHILIC SUBSTITUTION WITH ARENEDIAZONIUM SALTS DIAZO COUPLING... [Pg.1021]

Diazo coupling Electrophilic substitution with arenediazonium salts, giving uzo dyes. [Pg.256]

Diazonium Salts as Electrophiles Diazo Coupling Arenediazonium ions act as weak electrophiles in electrophilic aromatic substitutions. The products have the structure Ar—N=N—Ar, containing the —N=N— azo linkage. For this reason, the products are called azo compounds, and the reaction is called diazo coupling. Because they are weak electrophiles, diazonium salts react only with strongly activated rings (such as derivatives of aniline and phenol). [Pg.914]