Topic 21
Organic
Synthesis
Topic 21 asks you to identify the functional groups in a molecule that contains several of them and to predict its properties and reactions using the AS reactions (21.1.1), to devise multi-step synthetic routes (21.1.2), and to analyse a given route for the type of reaction and reagents at each step and its possible by-products (21.1.3). The first page builds the test table and the prediction method; the second gives the AS reaction map, two-stage routes worked forwards and backwards, and the by-products examiners expect.
Revision Notes
2 revision notes, in the order the specification teaches them.
Identifying the Functional Groups in a Molecule
Identifying the functional groups in a molecule with several groups and predicting its properties and reactions.
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Two-Stage Synthetic Routes
Two-stage synthetic routes using the AS reactions of alkenes, halogenoalkanes, alcohols and carbonyl compounds.
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Summary map
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Organic Synthesis Map
Cambridge International AS & A Level Chemistry · Topic 21 Organic synthesis
All of Topic 21 on one A4 page: identifying groups, multi-step routes, and analysing a route for reaction type, reagents and by-products.
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Revision Game
Match reagents to products, with your board's reagents and conditions.
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Specification
Every specification point in this topic, in the exam board's own words. Rate how confident you are with each one.
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21.1.1
21.1.2
- 21.1.2
devise multi-step synthetic routes for preparing organic molecules using the reactions in the syllabus
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21.1.3
- a
analyse a given synthetic route in terms of type of reaction and reagents used for each step of it
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