Abstract
Intramolecular Diels-Alder reactions of ester-linked 1,3,8-nonatrienes carrying a diphenylcyclopropyl substituent attached to C1 proceed with high levels of stereoselectivity. The stereochemical outcomes of these reactions are explained by reference to B3LYP/6-31G(d) transition structures. Experimentally, the diphenylcyclopropane rings remain intact through these IMDA reactions, notwithstanding their predicted extremely high degree of asynchronicity (the B3LYP-computed lengths in the IMDA transition structures differ by as much as 1.1 Å), providing support to the notion that these reactions are concerted processes.
| Original language | English |
|---|---|
| Pages (from-to) | 2606-2616 |
| Number of pages | 11 |
| Journal | Organic and Biomolecular Chemistry |
| Volume | 5 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2007 |