QuestionOrganic / iodolactonisation, stereochemistry
The major product formed in the following reaction sequence is :
- (a) cis-Fused γ-lactone: CH₂ and O wedged, I wedged, vinyl hashed
- (b) cis-Fused γ-lactone: CH₂ and O hashed, I wedged, vinyl hashed
- (c) δ-Lactone with CH₂I (from the vinyl group), ring alkene retained, trans ring fusion
- (d) δ-Lactone with CH₂I (from the vinyl group), ring alkene retained, cis ring fusion
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