Question

Which is the appropriate reagent for the given transformation

• A. $Zn\left(\right.Hg\left.\right),HCl$
• B. $\text{NH}_{\text{2}} \text{NH}_{\text{2}} \text{,} \, \text{OH}^{-}$
• C. $H_{2}/Ni$
• D. $NaBH_{4}$

Answer 1

Answer: (B)

Both $Zn\left(\right.Hg\left.\right),HCl$ and $NH_{2}NH_{2},OH^{-}$ can reduce $-COCH_{3}$ group to $-CH_{2}-CH_{3}$ group, but HCl will also bring about protonation of alcohol to form alkyl halide. Therefore, appropriate reagent for the conversion is $NH_{2}NH_{2},OH^{-}$ .