$R\,\,-\,{{N}^{+}}\,\equiv \,{{C}^{-}}\,\xrightarrow{{{H}^{+}}}\,R-{{N}^{+}}\equiv CH\,\xrightarrow{{{H}_{2}}O}$ $R-N=C\begin{matrix}
   {{/}^{H}}  \\
   {{\text{ }\!\!\backslash\!\!\text{ }}_{\text{OH}}}  \\
\end{matrix}\,\,\rightleftharpoons $ $\underset{Alkyl\,\,\,formamide}{\mathop{\begin{matrix}
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||  \\
   R-NH-C-H  \\
\end{matrix}}}\,$