Question

Among the following which one does not act as an
intermediate in Hofmann rearrangement ?
⋅⋅
(a) RNCO (b) RCON
⋅⋅
(c) RCONHBr
(d) RNC

Answer 1

The compound RNC does not act as intermediate in Hofmann rearrangement.

Option (D) is correct.

Explanation:

Hoffmann bromamide reaction take pace as follows:

     O                                                                                 O

     ∣∣                                                                                   ∣∣  

R−  C  −NH  2 (Br2 + KOH) ---> RCONHBr (KOH) ---> [ R−  C  − N ] ---> R-N=C=O

+ H2O ---->R - NH2

RNC does not act as intermediate in Hoffmann rearrangement.

Thus the compound RNC does not act as intermediate in Hoffmann rearrangement.

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