Electrophilic addition
Electrophilic addition
Formula
C=C + HX → CHX–CH₂ (via carbocation intermediate)
Real World
Electrophilic addition of water to ethene over a phosphoric acid catalyst at BP's Grangemouth plant produces ethanol industrially, replacing older fermentation methods for solvent-grade alcohol.
Exam Focus
Draw curly arrows from the π bond to the electrophile — marks are lost if arrows originate from a carbon atom instead.
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