Question

In which of the following conversions, phosphorus pentachloride is used as the reagent?

• A. $H _{2} C = CH _{2} \rightarrow CH _{3} CH _{2} Cl$
• B. $CH _{3} CH _{2} OH \rightarrow CH _{3} CH _{2} Cl$
• C. $H _{3} C - O - CH _{3} \rightarrow CH _{3} Cl$
• D. $HC \equiv CH \rightarrow CH _{2}= CHC 1$

Answer 1

Answer: (B), (C)

$CH _{3}- O - CH _{3}+ PCl _{5} \rightarrow 2 CH _{3} Cl + POCl _{3}$
$CH _{3} CH _{2} OH + PCl _{5} \rightarrow CH _{3} CH _{2} Cl + HCl + POCl _{3}$
So, both reaction carried out by $PCl _{5}$