Question

Which of the following statement(s) is/are correct about the given reaction?

• A. The compounds (B) and (C), respectively, are $Et-CN$ and $EtN{H}_2$
• B. The compounds (B) and (C), respectively, are $EtN=C=O$ and $EtNHCOOEt$
• C. The reaction is known as Lossen rearrangement reaction
• D. The reaction proceeds via the formation of acyl carbene as the intermediate species

Answer 1

Answer: (B), (C)

The correct options are
B The compounds (B) and (C), respectively, are $EtN=C=O$ and $EtNHCOOEt$
C The reaction is known as Lossen rearrangement reaction


Here hydroxamate ester is rearranged to form isocynate (B). Hence can be said as Lossen rearrangement reaction.