JEE Main Chemistry question

Assertion: Hofmann bromamide degradation and Curtius degradation methods are both used to prepare 1° amines.

Reason: Both methods involve an intramolecular alkyl shift.

(A)Assertion is True, Reason is True; Reason is correct explanation for AssertionCorrect
(B)Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (A)

Solution

Both the Hofmann bromamide degradation (amide 1° amine, one carbon shorter) and the Curtius reaction (acyl azide 1° amine via an isocyanate) proceed through a nitrene (or nitrene-like) intermediate in which the migrating alkyl/aryl group moves from carbon to the

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Question ID VK-150416