In the reaction $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{CS}_{2}…
In the reaction $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{CS}_{2} \frac{\mathrm{HgCl}_{2}}{\Delta} \longrightarrow$ the product obtained is
phenyl isocyanide
phenyl cyanide
$\mathrm{p}$ -amino benzene
phenyl isothiocyanate sulphonic acid
Solution
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+\mathrm{CS}_{2} ightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH} . \mathrm{CS} \cdot \mathrm{SH} \stackrel{\mathrm{HgCl}_{2}}{\longrightarrow}$
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}=\mathrm{C}=\mathrm{S}+\mathrm{HgS}+2 \mathrm{HCl}$
The reaction is called mustard oil reaction.