Question

Identify the products $(X,Y)$ and reaction mechanism $(Z)$ of the following reaction?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

(i) Reaction of ether with HI give an alcohol and alkyl iodide $(R-I)$, in which $-I$ is bonded with more substituted part of ether in case of presence of $3^{\circ }C$ -atom in that part of ether.

Thus, the given reaction occurs as follows:



(ii) In case presence of $3^{\circ }C$ -atom, the atom $-I$ combines via $S_N$ l mechanism, as $3^{\circ }$ carbocation (formed during the reaction) is highly stable (more than $1^{\circ }$ and $2^{\circ }$ carbocations) and do not follow $S_{N}2$ mechanism due to steric-hindrance.

Hence,