Elimination

Making a double bond

An interactive lesson with 4 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• E2: base removes β-H, C=C forms, leaving group leaves, in one step.
• Bulky bases and heat favour elimination; Zaitsev: more substituted alkene.

Steps

1. Pull off a proton instead
2. Three arrows
3. Substitute or eliminate?
4. Zaitsev’s rule