i) Explain Hoffmann bromamide degradation for the preparation of aniline.
ii) Give the IUPAC name of `CH_(3)-NH-CH_(2)-CH_(3)`. 

Explanation

a) i) When amides are heated with bromine and NaOH/KOH (alcoholic/aqueous) Hoffmann.s bromamide degradation takes place leading to the formation of amines containing one carbon atom less than the respective amide.
`underset("Amide")(R-overset(O)overset(||)C-NH_(2))+Br_(2)+4NaOH rarr underset("Amine")(R-NH_(2))+Na_(2)CO_(3)+2NaBr+2H_(2)O`
ii) The IUPAC name is N-methylethánaminie.