13.7 Write short notes on the following:
(iv) Coupling reaction
Coupling reaction-
The reaction of joining of diazonium salt to the aromatic ring (like phenol) through bond is known ass coupling reaction. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt() to give p-hydroxyazobenzene(orange in colour)
Reactions-
diazonium salt reacts with aniline to give p-aminoazobenzene (yellow colour)