Discussion Forum



1)

Which of the following statement (s) is/are incorrect in the case of Hofmann bromamide degradation?


A) Reaction is useful for decreasing length of carbon chain by one carbon atom

B) It gives tertiary amine

C) It gives primary amine

D) Aqueous or alco.KOH is used with bromine

Answer:

Option B

Explanation:

Statement (B) is incorrect in case of Hofmann bromamide degradation. This is used to synthesise primary amine.

 In this reaction, amide on reaction with Br2 in an aqueous or ethanolic solution of NaOH give 1° amine with one C atom less than that present in the amide.

$RCONH_{2}+Br_{2}+4KOH$   $\underrightarrow{\triangle}$           $RNH_{2}+2KBr_{}+K_{2}CO_{3}+2H_{2}O$

                                                          1° amine