Mechanisms

This is not mine, it is from this lovely website here:
http://www.a-levelchemistry.co.uk

They are from the AQA section but are useful to anyone that does mechanisms in their A-level

 These notes go into more detail than is necessary, and I am hoping to upload condensed versions soon :)

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  • Created by: Megan1808
  • Created on: 31-05-13 19:15
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ORGANIC MECHANISMS FOR UNIT 2

Mechanisms required: 1. free radical substitution
methane with chlorine

2. electrophilic addition
alkenes with hydrogen bromide
alkenes with bromine
alkenes with sulphuric acid

3. nucleophilic substitution
haloalkanes with hydroxide ions
haloalkanes with cyanide ions
haloalkanes with ammonia

4. elimination
hydrogen halides from haloalkanes

Remember: All…

Page 2

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1. free radical substitution

Initiation:

UV



Propagation:






Termination




Further propagation:






Different termination steps:




Page 3

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2. electophilic addition


a) with hydrogen bromide






b) with bromine






c) with sulphuric acid







Page 4

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3. nucleophilic substitution

a) with hydroxide ions







b) with cyanide ions






c) with ammonia








Page 5

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4. elimination


a) haloalkanes







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