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Question: Answered & Verified by Expert
Best method of preparing alkyl chloride is
ChemistryHaloalkanes and HaloarenesJEE Main
Options:
  • A $\mathrm{ROH}+\mathrm{SOCl}_2 \longrightarrow$
  • B $\mathrm{ROH}+\mathrm{PCl}_5 \longrightarrow$
  • C $\mathrm{ROH}+\mathrm{PCl}_3 \longrightarrow$
  • D $\mathrm{ROH}+\mathrm{HCl} \xrightarrow{\text { anhy. } \mathrm{ZnCl}_2}$
Solution:
2237 Upvotes Verified Answer
The correct answer is: $\mathrm{ROH}+\mathrm{SOCl}_2 \longrightarrow$
The chlorination of alcohol by $\mathrm{SOCl}_2$ (thionyl chloride) is the best method for the preparation of alkyl halides as in this method all the other product are gaseous and thus halides are obtained on quite pure state $\mathrm{R}-\mathrm{OH}+\mathrm{SOCl}_2 \xrightarrow{\Delta} \mathrm{R}-\mathrm{Cl}+\mathrm{HCl} \uparrow+\mathrm{SO}_2 \uparrow$

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