One of the following amide will not undergo Hoffmann bromamide reaction:
CH3CONH2
CH3CONHCH3
C6H5CONH2
CH3CH2CONH2
CH3CONHCH3 is an example for secondary amide. Hoffmann bromamide reaction is answered by primary amide.
We can obtain ethylamine by Hoffmann bromamide reaction. The amide used in this reaction is: