Photoinduced Electron Transfer Reactions of α-Cyclopropyl- and α-Epoxy Ketones. Tandem Fragmentation−Cyclization to Bi-, Tri-, and Spirocyclic Ketones
作者:Thorsten Kirschberg、Jochen Mattay
DOI:10.1021/jo961015b
日期:1996.1.1
compounds, among them are silylated fragmentation products, indicating that a proton is transferred from not only the amine radical cation but also the cationic silyl group. The intramolecular Paternó-Büchi reaction has also been studied for cyclopropane derivatives of the jasmone type leading to tetracyclic oxetanes. Finally, alpha-epoxy-substituted ketones have been investigated under PET conditions, yielding