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How are the following compounds obtained...

How are the following compounds obtained from benzene diazonium chloride ?
(i) phenol, (ii) ester, (iii) p-hydroxy azo benzene.

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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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