$RCN{\mkern 1mu} \xrightarrow{{reduction}}{\mkern 1mu} (a),$
$RCN{\mkern 1mu} {\mkern 1mu} \mathop {\xrightarrow{{(i){\kern 1pt} C{H_3}MgBr}}}\limits_{(ii){\kern 1pt} {H_2}O} {\mkern 1mu} (b),$
$RNC{\mkern 1mu} {\mkern 1mu} \xrightarrow{{hydrolysis}}{\mkern 1mu} {\mkern 1mu} (c),{\mkern 1mu} $
$RN{H_2}{\mkern 1mu} \xrightarrow{{HN{O_2}}}{\mkern 1mu} {\mkern 1mu} (d)$
$R{\mkern 1mu} - {\mkern 1mu} {\mkern 1mu} CN{\mkern 1mu} \xrightarrow{{(1){\kern 1pt} C{H_3}MgBr}}{\mkern 1mu} $ $R{\mkern 1mu} - {\mkern 1mu} \mathop {{\text{ }}C}\limits_{\mathop {{\text{ }}|\,}\limits_{\,\,\,\,\,\,C{H_3}} } {\mkern 1mu} {\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} N{\mkern 1mu} - {\mkern 1mu} {\mkern 1mu} MgBr{\mkern 1mu} $ $\xrightarrow{{{H_2}O}}{\mkern 1mu} R{\mkern 1mu} - {\mkern 1mu} \mathop {{\text{ }}C}\limits_{\mathop {\mathop {{\text{ }}|}\limits_{\,\,\,\,\,\,\,C{H_3}} }\limits_{Ketone} } {\mkern 1mu} = {\mkern 1mu} {\mkern 1mu} O$ $(b)$
$\,R\, - \,NC\,\xrightarrow{{Hydrolysis}}\,\mathop {R\, - \,N{H_2}}\limits_{{1^o }Amine}$ $(c)$
$ \,R - N{H_2}\,\xrightarrow{{HN{O_2}}}\,\mathop {R - OH}\limits_{Alcohol}$ $(d)$
$C{{H}_{3}}CN+2H\underset{\text{Ether}}{\mathop{\xrightarrow{HCl}}}\,X\xrightarrow{\text{Boiling }{{H}_{2}}O}Y;$ $Y$ શું છે?