$\begin{array}{1 1} R-X+NH_3 \to \\ R-CH=NOH+(H) \quad \underrightarrow{Na/C_2H_5OH} \\ R-CN +H_2O \quad \underrightarrow{H^+} \\ R-CONH_2 \quad \underrightarrow{L_iAIN_4} \end{array} $
