Question
Question: Which of the following conversions needs the reagent Sn/HCl?...
Which of the following conversions needs the reagent Sn/HCl?

A
R-NO₂→R - NH₂ + 2H₂O
B
R-CO-NH₂ → R - NH₂
C
R-C≡N→R - CH₂ - NH₂
D
R-CO-NH₂ → R-CH₂- NH₂
Answer
R-NO₂→R - NH₂ + 2H₂O
Explanation
Solution
Reduction of a nitro group (–NO₂) to an amine (–NH₂) is classically carried out by Sn/HCl.