H O
OH
NH2
NaNO2
+HCl
Aniline
N Cl
2
2
N   + HCl
2
+
Benzene diazonium
chloride
Warm
+
–
4 From cumene
Phenol is manufactured from the hydrocarbon, cumene Cumene
(isopropylbenzene) is oxidised in the presence of air to cumene
hydroperoxide It is converted to phenol and acetone by treating it
with dilute acid