Chemistry - Halogen Derivative Question with Solution | TestHub

Darzen's method : Alkyl halides are prepared when thionyl chloride and alcohols are refulxed in presence of pyridine. $$R-\mathrm{OH}+{\mathrm{SOCl}}_2\underset{\text{ reflux }}{\stackrel{\mathrm{Py}}{⟶}}R-\mathrm{Cl}+{\mathrm{SO}}_2+\mathrm{HCl}\text{. }$$ Byproducts of this reaction are gases $\left({\mathrm{SO}}_2,\mathrm{HCl}\right)$ so can be easily removed from the reaction mixture.