Which one of the following amides will not un | vedclass

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(B) Only primary amides $(R-CONH_2)$ undergo the Hoffmann bromamide reaction to yield primary amines.$R-CONH_2 + Br_2 + 4NaOH \xrightarrow{\Delta} R-N

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$CH_3CONHCH_3$

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(B) Only primary amides $(R-CONH_2)$ undergo the Hoffmann bromamide reaction to yield primary amines.$R-CONH_2 + Br_2 + 4NaOH \xrightarrow{\Delta} R-NH_2 + Na_2CO_3 + 2NaBr + 2H_2O$In the given options,$CH_3CONHCH_3$ is a secondary amide ($N$-methylacetamide) because the nitrogen atom is attached to one alkyl group in addition to the carbonyl group.Since secondary amides lack the two hydrogen atoms on the nitrogen required for the rearrangement mechanism,it does not undergo the Hoffmann bromamide reaction.

Which one of the following amides will not undergo the Hoffmann bromamide reaction?

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