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Electrophilic Addition

AQA AS-level ChemistryAlkenesLesson 10 of 23

The typical reaction of alkenes is electrophilic addition. An electrophile attacks the C=C, the π bond breaks, and two atoms or groups add across the double bond. Two reactant molecules combine to form one product, which is saturated.

The mechanism has two steps. Take a general electrophile Xδ+–Yδ–:

Diagram

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