$\begin{matrix} O\,\,\,\, \\ \,||\,\,\,\, \\ C{{H}_{3}}-C-Cl\xrightarrow{{{H}_{2}}S} \\ \end{matrix}$ નીપજ
$C{H_2}CN\xrightarrow{{Na/{C_2}{H_5}OH}}\,A\,\xrightarrow{{HN{O_2}}}\,B\,\xrightarrow{{C{r_2}O_{_7}^{ - 2}}}\,C$