The reaction sequence given below represents Hoffmann bromamide reaction in which RCONH2 is converted into R - NH2 :
→ 
→ 
→
(I) (II) (III)
→ 
→ 
(IV) (V) (VI)
Electron donating groups attached to phenyl activates the reaction. The above reaction sequence is
interamolecular reaction.
(i) The reagent used to convert (I) to (II) is :
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
(i)
Sol. The reagent used in Hofmann bromamide reaction is alkaline halogen
(NaOH or KOH + Br 2 ) Therefore, option is correct.
(ii)
Sol. Conversion of (III) to (IV) involving rearrangement is slowest step. Species (III) is
electron deficient (N hoes only 6 electron), hence it has a tendency to get its octed
completed by migration of alkyl group. There for option is correct.
(iii)
Sol. Since the reaction is intermolecular, no cross product will be formed.
⎯→ 
Therefore, option is correct.
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