Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

Here the final product E is Butene and the reaction sequence is as follows

${\text{CH}}_{\text{2}}\text{OH}-\text{CH}\text{=}{\text{CH}}_{\text{2}}\underset{\text{(ii)}{\text{NaSO}}_{\text{3}}\text{H}}{\overset{\text{(i)}{\text{OsO}}_{\text{4}}}{\to }}\underset{\text{(A)}}{{\text{CH}}_{\text{2}}\text{OH}-\text{CHOH}-{\text{CH}}_{\text{2}}\text{OH}}\stackrel{{\text{KHSO}}_{\text{4}}}{\to }\underset{\text{(B)}}{{\text{CH}}_{\text{2}}\text{=}\text{CH}-\text{CHO}}\stackrel{\text{Zn-Hg}\text{/}\text{conc}\text{.}\text{HCl}}{\to }$

$\underset{\text{(C)}}{{\text{CH}}_{\text{2}}\text{=}\text{CH}-{\text{CH}}_{\text{3}}}\underset{{\text{CCl}}_{\text{4}}}{\overset{\text{NBS/hv}}{\to }}\underset{\text{(D)}}{{\text{CH}}_{\text{2}}\text{=}\text{CH}-{\text{CH}}_{\text{2}}\text{Br}}\stackrel{{{\text{(CH}}_{\text{3}}\text{)}}_{\text{2}}\text{CuLi}}{\to }\underset{\text{(E)}}{{\text{CH}}_{\text{2}}\text{=}\text{CH}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{3}}}$