Question

Which one of the following gives amine on heating with amide ?

• A. $Br_2$ in aqueous $KOH$
• B. $Br_2$ in alcoholic $KOH$
• C. $Cl_2$ in Sodium
• D. Sodium in Ether

Answer 1

Answer: (A)

$Br_2$ in aqueous $KOH$

Answer 2

Hofmann bromamide reaction : this method is used for the preparation of any $1^{\circ}$ amine as well as aniline. During the reaction amide is treated with $Br _{2}$ and alkali $(KOH)$ to get primary amine. This reaction is used to descend the series in which carbon atom is removed as carbonate ion $\left( CO _{3}^{2-}\right)$ reaction is given as