The major product in the following reaction is H⁺ · ABC26OR0327
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Named Reactions · Exam: CSIR NET DEC 2016 · Marks: 2 · Difficulty: Medium
The major product in the following reaction is $\mathrm{H^{+}}$
(a)
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Protonation opens the oxaspiropentane at the tertiary carbon; the adjacent cyclopropane bond migrates to the cation (ring expansion) and the former spiro carbon becomes the carbonyl: 2-methyl-2-propylcyclobutanone (b).
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