Question

Predict the name and product of the given reaction.

• A. Curtius rearrangement and
  
• B. Lossen rearrangement and
  
  
• C. Hoffmann rearrangement and
  
  
• D. Curtius rearrangement and
  
  

Answer 1

The correct option is B Lossen rearrangement and



O-acyl derivatives of hydroxamic acid on treatment with strong base undergoes rearrangement via isocyanate intermediate to form amine product. This rearrangement is called Lossen rearrangement.


Hence, option (b) is correct.