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Bromination of Phenol

OCR A-level Organic ChemistryBenzeneLesson 12 of 16

Phenol reacts with bromine water at room temperature, without a halogen carrier. This is an electrophilic substitution.

Observations
• The orange bromine water is decolourised.
• A white precipitate of 2,4,6-tribromophenol forms.

Equation

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Key terms in this lesson

electrophilic substitution
A reaction mechanism in which an electrophile is attracted to and attacks a region of high electron density, such as the delocalised ring in benzene, displacing a hydrogen atom.

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