In the following reaction, [X] the major product [X] is: · ABC26OR0477
Subject: Organic Chemistry · Chapter: Reactive Intermediates · Topic: Intermediate – General · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Easy
In the following reaction, 
$[\mathrm{X}]$ the major product $[\mathrm{X}]$ is:
$[\mathrm{X}]$ the major product $[\mathrm{X}]$ is:(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed C; on checking, A is correct — see the explanation.
Explanation
Tandem radical cyclisation: the primary radical from the bromide cyclises 5-exo onto the internal alkene, and the new radical cyclises 5-exo onto the terminal alkene; H-abstraction gives 1-(2-methylcyclopentyl)cyclopentane (a).
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