Carbon oxygen double bond are easily reduced by `NaBH_(4) or LiAlH_(4)`. The actual reducing agent in these reduction is hrdride ion `(H^(-))`
The metal hydrogen bond in `LiAlH_(4)` is more than polar than metal hydrogen bond in `NaBH_(4)`. As a result `LiAlH_(4)` is strong reducing agent than `NaBH_(4)`. Esters, carboxylic acids, amides cannot be reduced by `NaBH_(4)`
The carbonyl group of amide of reduced to methylene group by `LiAlH_(4)`
A. `CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(CH)-CH_(3)`
B. `CH_(3)-underset(D)underset(|)overset(OH)overset(|)(C)-CH_(2)-CH_(3)-OD`
C. `CH_(3)-overset(OD)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(OH)-CH_(3)`
D. `CH_(3)-overset(OD)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(CH)-CH_(3)`
