Reactive-State Spin-Dependent Diastereoselective Photoisomerization of trans,trans-2,3-Diphenylcyclopropane-1- carboxylic Acid Derivatives Included in Zeolites

The asymmetric induction facilitated by a chiral auxiliary during the photoisomerization of trans,trans-2,3-diphenylcyclopropane derivatives depends on the medium (solution vs zeolite) and the reactive state (singlet vs triplet). Within zeolites, direct excitation most likely proceeds via a zwitteri...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Organic letters 2002-11, Vol.4 (24), p.4221-4224
Hauptverfasser: Sivaguru, J, Shichi, Tetsuya, Ramamurthy, V
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The asymmetric induction facilitated by a chiral auxiliary during the photoisomerization of trans,trans-2,3-diphenylcyclopropane derivatives depends on the medium (solution vs zeolite) and the reactive state (singlet vs triplet). Within zeolites, direct excitation most likely proceeds via a zwitterionic intermediate, while triplet sensitization most likely proceeds via a diradical intermediate.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol026695l