When phenol is heated with ammonia in presence of at $300°\mathrm{C}$, it gives aniline

We know that,

${\mathrm{C}}_6{\mathrm{H}}_5 -\mathrm{OH}+{\mathrm{NH}}_3\stackrel{\mathrm{anhydrous} {\mathrm{ZnCl}}_2}{\to }{\mathrm{C}}_6{\mathrm{H}}_5-{\mathrm{NH}}_2+{\mathrm{H}}_2\mathrm{O}$

Phenol is converted into aniline in the presence of ammonia at $300°C$ with the help of Anhydrous ${\mathrm{ZnCl}}_2$.