JEE Main Chemistry question

In the context of the rearrangement of an oxime of a ketone to an amide (Beckmann rearrangement), which of the following statement(s) is/are correct?

(A)It is the cis hydrocarbon radical (R) with respect to the OH group that migrates
(B)The group that migrates never gets completely detached from the remainder of the molecule during the transformationCorrect
(C)The rearrangement is intermolecular
(D)None of the above

Answer: (B)

Solution

Beckmann rearrangement proceeds with the group anti (trans) to the leaving (activated, e.g. tosylated) hydroxyl migrating to the adjacent, now electron-deficient nitrogen; critically, this migration is concerted and

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Question ID VK-149373