A-LevelChemistryOrganic synthesis9701/12 · Oct/Nov 2024 · Q301 Mark

X and Y are the reagents required to convert 1-bromopropane into butanoic acid. [Figure showing reaction scheme from 1-bromopropane to an intermediate via reagent X, then to butanoic acid via reagent Y] What are the correct identities of reagents X and Y?

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ANH3 HCl(aq)

BKCN in C2H5OH NaOH(aq)

CKCN in C2H5OH HCl(aq)

DHCN NaOH(aq)

✓ Correct answer

C: KCN in C2H5OH HCl(aq)

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Topic: Organic synthesis, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2024 Paper 1 Variant 2, question 30.

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