c
\(\underset{bromo\,methane }{\mathop{C{{H}_{3}}\,Br\,+\,KCN}}\,\,\to \,\underset{acito\,nitrile }{\mathop{\,C{{H}_{3}}\,CN}}\,\,\underset{reduction}{\mathop{\xrightarrow{Na\,/\,{{C}_{2}}{{H}_{5}}OH}}}\,\,\,\underset{ethenamine\,{(Y)}}{\mathop{\text{C}{{\text{H}}_{\text{3}}}\,C{{H}_{2}}\,N{{H}_{2}}}}\,\)