How are the following compounds obtained from benzene diazonium chlori – InterviewSolution

1.	How are the following compounds obtained from benzene diazonium chloride ? (i) phenol, (ii) ester, (iii) p-hydroxy azo benzene.
Answer» Solution :Diazonium coupling reaction : Diazonium salt reacts with aromatic amine and PHENOLS to give azo compounds of the general FORMULA. `Ar-N=N-Ar` This reaction is known as Coupling reaction since all these compounds are intensely coloured and USED as dyes, thousands of azo dyes have been SYNTHESISED by this procedure.

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