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- Title
Visible‐Light Cascade Photooxygenation of Tetrahydrocarbazoles and Cyclohepta[b]indoles: Access to C,N‐Diacyliminium Ions.
- Authors
Frahm, Mario; Drathen, Thorsten; Gronbach, Lisa Marie; Voss, Alice; Lorenz, Felix; Bresien, Jonas; Villinger, Alexander; Hoffmann, Frank; Brasholz, Malte
- Abstract
Tetrahydrocarbazoles and perhydrocyclohepta[b]indoles undergo a catalytic cascade singlet oxygenation in alkaline medium, which leads to chiral tricyclic perhydropyrido‐ and perhydroazepino[1,2‐a]indoles in a single operation. These photooxygenation products are new synthetic equivalents of uncommon C,N‐diacyliminium ions and can be functionalized with the aid of phosphoric acid organocatalysis.
- Subjects
IONS; INDOLE; REACTIVE oxygen species; PHOSPHORIC acid; ORGANOCATALYSIS
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 30, p12550
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202007549