Which of the following reagents is used for the following conversion?…
Which of the following reagents is used for the following conversion? $\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO} \longrightarrow \mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{2} \mathrm{OH}$
$\mathrm{H}_{3} \mathrm{O}^{+}$
$\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}$
$\mathrm{H}_{2} / \mathrm{Ni}$
LiAlH $_{4}$
Solution
LiAlH $_{4}$ does not reduces isolated olefin bond and hence it can reduce unsaturated aldehyde and ketones to unsaturated alcohols.