question_answer

Reaction of \[R-\overset{O}{\mathop{\overset{|\,|}{\mathop{C}}\,}}\,-N{{H}_{2}}\]with a mixture of \[B{{r}_{2}}\]and KOH produce \[RN{{H}_{2}}.\]During the reaction which of the intermediate product is formed?

A) R?NH?Br                        

B) \[~HCONB{{r}_{2}}\]

C) R?N-C=O                          

D) all of these

Correct Answer: C

Solution :

Primary amines can be prepared from primary amides by Hermann's bromamide reaction or Hofmann's degradation. In this reaction p- amine which is formed has one carbon less than amide. This reaction is very important in stepping down homologous series Intermediate