Click the structures and reaction arrows in sequence to view the 3D models and animations respectively
The usual regioselectivity may be compromised in intramolecular reactions. In some cases, it is impossible for the reagents to get together in the ‘correct’ orientation. The ester (methyl-2,7,9-decatrienoate) above has a short chain of carbons between its diene and dienophile. This restricts the orientation and produces an endo transition state which leads to a trans ring fusion.
We are sorry that this page was not useful for you!
Let us improve this page!
Tell us how we can improve this page (in your own language if you prefer)?