In the given transformation, which of the following is the most appropriate reagent?

Options

A. `Zn-HG//HCl`
B. `Na` in liq. `NH_(3)`
C. `NaBH_(4)`
D. `NH_(2)-NH_(2),OH^(-)`

Answer

D

Explanation

Both Zn(Hg), HCl and `NH_(2)NH_(2),OH^(-)` can reduce `CH=CHCOCH_(3) to CH=CHCH_(2)CH_(3)` group but HCl will also bring about substitution of OH by Cl, therefore, the most effective reagent is `NH_(2)NH_(2),OH^(-)`