The structure of the major product in the following reaction is: · ABC26OR0853
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
The structure of the major product in the following reaction is: 
(a)
(b)
(c)
(d)
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Me₂CuLi adds a methyl 1,4 to the enone; the resulting enolate then alkylates intramolecularly with the pendant bromide, closing a six-membered ring — the trans/cis-decalone with an angular methyl (d).
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