$\underset{(X)}{\mathop{{{C}_{2}}{{H}_{5}}NC}}\,\xrightarrow{\begin{smallmatrix} \operatorname{Re}duction \\ Zn-Hg/HCl \end{smallmatrix}}\underset{(Y)\,\,ethyl\,\,methyl\,\,a\min e}{\mathop{{{C}_{2}}{{H}_{5}}NHC{{H}_{3}}}}\,$
$\underset{I}{\mathop{C{{H}_{3}}-C{{H}_{2}}-N{{H}_{2}}}}\,$
$\underset{II}{\mathop{{{(C{{H}_{3}}C{{H}_{2}})}_{2}}NH}}\,$
$\mathop {{{(C{H_3}C{H_2})}_3}N}\limits_{II} $