$\underset{\begin{smallmatrix}
2\,-\,oc\tan ol \\
(optically\,\,active)
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}-\overset{*}{\mathop{C}}\,H-{{(C{{H}_{2}})}_{5}}-C{{H}_{3}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
:\underset{\scriptscriptstyle\centerdot\centerdot}{O}H\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix}}}\,$$\xrightarrow{{dil\,.\,acid}}\,C{H_3} - CH = CH - {(C{H_2})_4} - C{H_3}$
${C_3}{H_7}OH\,\xrightarrow{{{H_2}S{O_4}}}X\,\xrightarrow{{B{r_2}}}\,Y\xrightarrow{{KOH}}Z$