$I.$ $C H_{3} C H=C H C H_{3}$ (મુખ્ય નીપજ )
$II.$ $C H_{2}=C H C H_{2} C H_{3}$ (ગૌણ નીપજ )
$\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,H} \\
{\,\,\,\,\,\,\,\,\,|} \\
{C{H_3} - CH - CH - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\xrightarrow[{Alc.KOH}]{{ - {H_2}O}}$ $\left[ {\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H - OH} \\
{\,\,\,\,|} \\
{C{H_3}CH = CH - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}} \right] \to \mathop {C{H_3} - CH = CH - C{H_3}}\limits_{(Major\,product)} + B{r^ - }$
$\begin{array}{*{20}{c}}
{C{H_3}} \\
|\,\,\,\,\,\, \\
{C{H_{_3}} - C - C{H_2}Br} \\
|\,\,\,\,\,\, \\
H\,\,\,\,
\end{array}\,\xrightarrow[{C{H_3}OH}]{{C{H_3}{O^ - }}}$