Question

Which of the following reaction gives secondary amine?

• A. Reduction of amide
• B. Reduction of carbylamine
• C. Reduction of nitro compound
• D. Hoffmann reduction

Answer 1

The correct option is B Reduction of carbylamine

Reduction of amide gives primary amine as:

$RCON{H}_2+LiAl{H}_4\to RC{H}_{2}N{H}_2$

Reduction of carbylamine gives secondary amine as:

$RNC+H_2/Pt\to RN{H}_{2}C{H}_3$

Reduction of nitrocompounds gives primary amine as:

$RN{O}_2+LiAl{H}_4\to RN{H}_2$

Hoffmann reduction gives primary amine as:

$RCON{H}_2+B{r}_2+NaOH\to RN{H}_2+C{O}_2$

therefore option B is correct