Q20 / 180 · KCET 2009 · Chemistry
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with
- A$\mathrm{PCl}_{3}$
- B$\mathrm{PCl}_{5}$
- Correct answerC$\mathrm{SOCl}_{2}$ in presence of pyridine
- Ddry $\mathrm{HCl}$ in the presence of anhydrous $\mathrm{ZnCl}_{2}$
Solution
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with $\mathrm{SOCl}_{2}$ in the presence of pyridine.
$$
\mathrm{ROH}+\mathrm{SOCl}_{2} \longrightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{SO}_{2}
$$
The other products being gases escape leaving behind pure alkyl halide.
Hence, the correct answer is option: 'C'.