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(D) Hoffmann's exhaustive methylation $(HEM)$ and elimination is a process used to degrade amines. The number of cycles required depends on the struct

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Both $(a)$ and $(b)$

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(D) Hoffmann's exhaustive methylation $(HEM)$ and elimination is a process used to degrade amines. The number of cycles required depends on the structure of the amine.$(a)$ Piperidine is a secondary cyclic amine. It undergoes $2$ cycles of $HEM$ and elimination to form $1,5$-pentadiene.$(b)$ Decahydroquinoline is a secondary cyclic amine. It also undergoes $2$ cycles of $HEM$ and elimination.Since both $(a)$ and $(b)$ undergo an even number $(2)$ of cycles,the correct option is $(d)$.

Which of the following compounds gives an even number of Hoffmann's exhaustive methylation and elimination cycles?

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