Chem AS mechanisms

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  • Created by: Madelen
  • Created on: 08-05-15 09:02

Electrophilic addition

(http://alevelchem.com/img/electrophilic_addition_bromine.gif)3 Reagents/Conditions:

1)Hydrogen Bromide / Room temperature = bromoalkanes

2)Bromine water  /Room Temperature = dibromoalkanes

3)Sulphuric Acid / Cold / Concentrated = alkyl hydrogen sulphate

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Nucleophillic Subsition

Reagents/Conditions = Products:

1) Hydroxide ions(NaOH or KOH) / Warm & Reflux = alcohol

2) Cyanide Ions (KCN in aqueous ethanol) / Boil & Reflux = Nitrile

3)Ammonia (NH3 in ethanol) / sealed tube & Heat = Amine

(http://www.scienceaid.co.uk/chemistry/organic/images/ammoniahaloalkane.jpg)Only with NH3 has this extra stage.

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