Heating of 2-chloro-1-phenylbutane with EtOK/EtOH gives X as the major product. Reaction of X with Hg ( OAc )_2 / H_2 O followed by NaBH_4 gives Y as…

Heating of $\displaystyle 2$-chloro-$\displaystyle 1$-phenylbutane with EtOK/EtOH gives X as the major product. Reaction of X with $\displaystyle \mathrm{Hg}(\mathrm{OAc})_2 / \mathrm{H}_2 \mathrm{O}$ followed by $\displaystyle \mathrm{NaBH}_4$ gives Y as the major product. Y is :