$\mathrm{L}\mathrm{i}\mathrm{A}\mathrm{l}{\mathrm{H}}_4/{\left({\mathrm{C}}_2{\mathrm{H}}_5\right)}_2\mathrm{O}$ : Reduces to esters, carboxylic acid, epoxides, aldehydes and ketones.

$\mathrm{B}{\mathrm{H}}_3$ in T.H.F. : Reduces to $-\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}$ and aldehydes into alcohols but do not reduce to

ester and epoxides.

$\mathrm{N}\mathrm{a}\mathrm{B}{\mathrm{H}}_4$ in ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}$ : Reduces only aldehydes and ketones into alcohols but not to others.