Question

What is the action of benzene diazonium chloride on: 

a. phenol in alkaline medium? 

b. aniline?

Answer 1

a. The reaction of benzenediazonium chloride with phenol in mild alkaline medium yields p-hydroxyazobenzene (orange dye).

b. The reaction of benzenediazonium chloride with aniline in mild alkaline medium yields p-aminoazobenzene (yellow dye).