$CH_2OH-CHI-CH_2OH$
$\begin{array}{*{20}{c}}
{\,\,C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{CHOH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,C{H_2}OH}
\end{array}\, + \,3HI\,\xrightarrow{{ - {H_2}O}}\,\begin{array}{*{20}{c}}
{\,\,C{H_2}OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{CH - I} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{CHO\,\,\,\,}
\end{array}\,\xrightarrow{{{I_2}}}\,\begin{array}{*{20}{c}}
{\,\,\,C{H_2}} \\
{||\,\,\,} \\
{CH} \\
|\,\,\, \\
{\,\,\,\,\,\,C{H_2}I}
\end{array}\,\xrightarrow{{HI}}\,$
(અસ્થાયી) એલાઈલ (અસ્થાયી) પ્રોપીલીન આયોડાઈડ
$\begin{array}{*{20}{c}}
{\,\,\,C{H_2}} \\
{||\,\,\,} \\
{CH} \\
|\,\,\, \\
{\,\,\,\,\,C{H_2}I}
\end{array}\,\xrightarrow{{ - {I_2}}}\begin{array}{*{20}{c}}
{\,\,\,C{H_3}} \\
|\,\,\, \\
{CH} \\
|\,\,\, \\
{\,\,\,C{H_2}}
\end{array}\,\xrightarrow{{HI}}\,\begin{array}{*{20}{c}}
{\,\,\,C{H_3\,\,\,\,}} \\
| \,\,\,\,\,\,\,\,\\
{\,\,\,\,CH - I} \\
| \,\,\,\,\,\,\,\,\\
{C{H_2}I}
\end{array}$
આઈસો પ્રોપાઈલ આયોડાઈડ