This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Electrophilic Addition: 1,2- vs. 1,4-Addition (16.10) Protonation of 1,3-dienes by H-X generates an allylic carbocation 2 products for symmetrical dienes: 1,2- and 1,4-addition products 4 possible products for unsymmetrical dienes Kinetic vs. Thermodynamic Products (16.11) Relative amounts of 1,2- and 1,4-addition products strongly depend on reaction conditions Kinetic vs. Thermodynamic Products Figure 16.7 The Diels-Alder Reaction (16.12) Documented in 1928 by: Otto Diels and Kurt Alder Shared the 1950 Nobel Prize in Chem. The Diels-Alder Reaction (16.12) Concerted cycloaddition reaction between a 1,3-diene and a dienophile (usually an alkene) Product is a 6-membered ring...
View Full Document
- Spring '11
- Organic chemistry