Question

Which of the following sequence of reactions (reagents) can be used for the conversion of $C _{6} H _{5} CH _{2} CH _{3}$ into $C _{6} H _{5} CH = CH _{2}$ ?

• A. $SOCl _{2} ; H _{2} O$
• B. $SO _{2} Cl _{2} ;$ alc. $KOH$
• C. $Cl _{2} / hv ; H _{2} O$
• D. $SOCl _{2} ;$ alc. $KOH$

Answer 1

Answer: (B)

In this reaction $SO _{2} Cl _{2}$ causes free radical substitution at benzylic position and alc. $KOH$ causes elimination.