Alkyl Halides - Result Question 7
####7. The major product in the following conversion is
(2019 Main, 12 Jan II)
(a)
(b)
(c)
(d) $HO O-\left.\right| _{Br} ^{CH}-CH _2-CH _3$
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Answer:
Correct Answer: 7. (d)
Solution:
- Key Idea The excess of $HBr$ and high temperature in given reaction serves for dual purpose:
(i) Hydrolysis of ether via $S _N 2$ mechanism, i.e. Zeisel’s method.
(ii) Markownikoff addition at double bond of the branch.
The road map of complete reaction is as follows:
Transition state
Here, $BB=$ Bond breakage
$BF=$ Bonf formation
