\({R}-{NH}_{2} \stackrel{{CHCl}_{3}}{\longrightarrow} {R}-\stackrel{\oplus}{{N}} \equiv \stackrel{\ominus}{{C}} \xrightarrow[({HCl})]{{H}_{3} {O}^{\oplus}} {R}-{NH}_{2}+{HCOOH}\)
\(1^{\circ}\) amine \(_{(A)}\) \(\quad\quad\)Isonitrile \(_{(B)}\) \(\quad\quad(C)\)
$I.$ ${Sn}-{HCl}$ $II.$ ${Sn}-{NH}_{4} {OH}$ $III.$ ${Fe}-{HCl}$ ${IV} . {Zn}-{HCl}$ $V.$ ${H}_{2}-{Pd}$ $VI.$ ${H}_{2}-$ રેની નિકલ
(image) $\xrightarrow{{SOC{l_2}}}\,B\,\xrightarrow{{N{H_3}}}\,C$$\,\xrightarrow[{B{r_2}}]{{NaOH}}\,D$