Amines - Result Question 39

####41. Indicate which nitrogen compound amongst the following would undergo Hoffmann reaction (i.e., reaction with Br2 and strong KOH ) to furnish the primary amine (RNH2) [1989]

(a) RCONHCH3

(b) RCOONH4

(c) RCONH2

(d) RCONHOH.

Topic 3: Nitrocompounds, Alkyl Nitrites and Diazonium Salts

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Solution:

  1. (c) Only 1 amides (i.e. RCONH2 ) in the present case undergo Hofmann bromamide reaction.

RCONH2+Br2+4KOH

RNH2+2KBr+K2CO3+2H2O

(Hofmann’s bromamide reaction)



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