Electrophilic addition — bromine
Electrophilic addition · Br2 (bromine water or in an organic solvent) · room temperature
Watch every step, with the electron flow and reasoning shown.
Reagents: Br2 (bromine water or in an organic solvent) · Conditions: room temperature
Step 1 of 2
- 1.The π electrons attack the induced δ+ bromine (the end nearer the alkene).
- 2.The Br–Br bond breaks heterolytically towards the δ− bromine, releasing Br⁻.
A carbocation forms with Br on the adjacent carbon; Br⁻ is released.
Step 2 of 2
- 1.Bromide's lone pair attacks the positive carbon.
1,2-dibromoethane forms.
Product: 1,2-dibromoethane
Watched it? Now draw it yourself — that's what the exam asks.
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