1.

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

Answer»

Solution :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.


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