The major product formed in the following reaction is · ABC26OR0900
Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Easy
The major product formed in the following reaction is 
(a)
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Iodolactonisation is anti: I⁺ adds to one face and the carboxylate closes the lactone from the opposite face, on the same side as the CO₂ group. The I and the lactone O are trans (b).
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