This
type of reaction is known as coupling reaction Similarly the reaction of
diazonium salt with aniline yields p-aminoazobenzene This is an example
of electrophilic substitution reaction From the above reactions, it is clear that the diazonium salts are very
good intermediates for the introduction of –F, –Cl, –Br, –I, –CN, –OH,
–NO2 groups into the aromatic ring