A-LevelChemistryCarbonyl compounds9701/12 · Oct/Nov 2025 · Q341 Mark
An organometallic lithium compound, RLi, contains the nucleophile R⁻. CH3CH2Li reacts with pentan-2-one. The mechanism is nucleophilic addition. The first step produces an anion which is then protonated to form the final product. Which organic product is formed?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A[Diagram option A]
B[Diagram option B]
C[Diagram option C]
D[Diagram option D]
✓ Correct answer
B: [Diagram option B]
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