a
\(\begin{array}{*{20}{c}}
{Me\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Me - CH - CH - Me} \\
{\,\,\,\,\,\,\,\,\,\,|\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}\xrightarrow[{\Delta ,\,350{\,^o}C}]{{A{l_2}{O_3}}}\) \(\begin{array}{*{20}{c}}
{Me\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Me - C = CH - Me}
\end{array}\xrightarrow{{HI}}\) \(\begin{array}{*{20}{c}}
{Me\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Me - C - C{H_2} - Me} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{I\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\xrightarrow[{{S_{{N^1}}}(react.)}]{{AgOH}}\) \(\begin{array}{*{20}{c}}
{\,Me} \\
{|\,\,\,} \\
{Me - C - C{H_2}} \\
{|\,\,} \\
{\,\,OH}
\end{array} + AgI\,\)
\(\mathrm{Al}_{2} \mathrm{O}_{3}\) is dehydrating agent.