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CAIE A-Level Chemistry 21.1.3 Analysing Organic Synthetic Routes

Practise identifying reaction types, reagents and conditions at each stage and predicting possible by-products.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • classify each arrow as addition, substitution, elimination, oxidation, reduction, hydrolysis or condensation
  • infer a missing reagent from the structural change and state necessary solvent, catalyst or heating
  • check for competing substitution, further oxidation or multiple-product pathways when naming by-products

21.1.3—Analyse question 1

[Maximum number: 1]

Fig. 4.1 shows a possible synthesis of propene, C3H6\mathrm{C}_{3} \mathrm{H}_{6}.

Fig. 4.1

Fig. 4.1

Suggest a suitable reagent for reaction 2 .

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