$\underset{Chloroform}{\mathop{CHC{{l}_{3}}}}\,+\underset{\begin{matrix}
   Potassium  \\
   hydrogen  \\
\end{matrix}}{\mathop{3KOH}}\,+\underset{\begin{smallmatrix} 
 primary \\ 
 a\min e 
\end{smallmatrix}}{\mathop{RN{{H}_{2}}}}\,$ $\xrightarrow{\Delta }\,\underset{\begin{smallmatrix} 
 Alkyl \\ 
 Isocyanide 
 \\ 
 (Foul\,\,smell) 
\end{smallmatrix}}{\mathop{RNC}}\,\,+\,\,\underset{\begin{smallmatrix} 
 Potassium \\ 
 chloride 
\end{smallmatrix}}{\mathop{3KCl}}\,\,+\,\,\underset{Water}{\mathop{{{H}_{2}}{{O}_{2}}}}\,$