A-LevelChemistryOrganic synthesis9701/12 · Oct/Nov 2019 · Q401 Mark

Each of the compounds below is treated separately with an excess of NaBH₄. The product of each reaction is then heated with an excess of concentrated H₂SO₄. Which compounds give only one final product with the molecular formula C₇H₁₀? 1 [Skeletal structure of 3-methylcyclohexanone] 2 [Skeletal structure of 2,6-dimethylcyclohexanone] 3 [Skeletal structure of 4-methylcyclohexanone]

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A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

C: 2 and 3 only are correct

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Topic: Organic synthesis, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 2, question 40.

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