\(\,C{{H}_{3}}\underset{[C]}{\mathop{C}}\,ON{{H}_{2}}\,\underset{alkaly}{\mathop{\xrightarrow{B{{r}_{2}}/alkaly}}}\,\,\underset{[D]}{\mathop{C{{H}_{3}}N{{H}_{2}}}}\,\)
image $\mathop {\xrightarrow{{NaN{O_2}}}}\limits_{HCl} A\,\,\xrightarrow{{CuCN}}B\,\,\mathop {\xrightarrow{{{H_2}}}}\limits_{Ni} C\,\,\xrightarrow{{HN{O_2}}}D$
(image) $\xrightarrow{{[O]}}A\xrightarrow{{SOC{l_2}}}B\xrightarrow{{Na{N_3}}}C\xrightarrow{{Heat}}D$