પ્રક્રિયા તરીકે ઓળખાય છે.
$\begin{matrix}
O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \,\, \\
||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
N\equiv C-C{{H}_{2}}-C-C{{H}_{2}}-CH=C{{H}_{2}}\to \\
\end{matrix}$ $\begin{matrix}
OH\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\, \,\,\,\, \\
N\equiv C-C{{H}_{2}}-\underset{H}{\mathop{C}}\,-C{{H}_{2}}-CH=C{{H}_{2}} \\
\end{matrix}$
ફિનોલ $\xrightarrow{{Zn}}A\xrightarrow[{HN{O_3},{{60}\,^o}C}]{{{H_2}S{O_4}}}B\xrightarrow[{NaOH{_{(aq)}}}]{{Zn}}C$