$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,} \\
{C{H_3} - CH = CH - C{H_2} - CH - C{H_3}}
\end{array}$ $\longrightarrow $ $C{H_3} - CH = CH - C{H_2}C{O_2}H$
ફિનોલ $\xrightarrow[{Distillation}]{{Zn}}A$ $ \xrightarrow[{conc\,HN{O_3},60\,{}^oC}]{{conc\,{H_2}S{O_4}}}B$ $\xrightarrow[{NaO{H_{\left( {aq} \right)}}}]{{Zn}}C$
$C{H_3}C{H_2}OH\xrightarrow{{P + {I_2}}}A\xrightarrow{{Mg}}B\xrightarrow{{HCHO}}C\xrightarrow{{{H_2}O}}D$