a
\({{C}_{2}}{{H}_{5}}Br\,\xrightarrow{AgCN}\underset{(X)}{\mathop{{{C}_{2}}{{H}_{5}}NC}}\,+AgBr\)

\(\underset{(X)}{\mathop{{{C}_{2}}{{H}_{5}}NC}}\,\xrightarrow{\begin{smallmatrix} 
 \operatorname{Re}duction \\ 
 Zn-Hg/HCl 
\end{smallmatrix}}\underset{(Y)\,\,ethyl\,\,methyl\,\,a\min e}{\mathop{{{C}_{2}}{{H}_{5}}NHC{{H}_{3}}}}\,\)