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Asymmetric Photoaerobic Lactonization and Aza-Wacker Cyclization of Alkenes Enabled by Ternary Selenium–Sulfur Multicatalysis
Lei, Tao, Graf, Sebastian, Schöll, Christopher, Krätzschmar, Felix, Gregori, Bernhard, Appleson, Theresa und Breder, Alexander
(2023)
Asymmetric Photoaerobic Lactonization and Aza-Wacker Cyclization of Alkenes Enabled by Ternary Selenium–Sulfur Multicatalysis.
ACS Catalysis 13 (24), S. 16240-16248.
Veröffentlichungsdatum dieses Volltextes: 23 Feb 2024 15:37
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.55588
Zusammenfassung
An adaptable, sulfur-accelerated photoaerobic selenium-pi-acid ternary catalyst system for the enantioselective allylic redox functionalization of simple, nondirecting alkenes is reported. In contrast to related photoredox catalytic methods, which largely depend on olefinic substrates with heteroatomic directing groups to unfold high degrees of stereoinduction, the current protocol relies on ...
An adaptable, sulfur-accelerated photoaerobic selenium-pi-acid ternary catalyst system for the enantioselective allylic redox functionalization of simple, nondirecting alkenes is reported. In contrast to related photoredox catalytic methods, which largely depend on olefinic substrates with heteroatomic directing groups to unfold high degrees of stereoinduction, the current protocol relies on chiral, spirocyclic selenium-pi-acids that covalently bind to the alkene moiety. The performance of this ternary catalytic method is demonstrated in the asymmetric, photoaerobic lactonization and cycloamination of enoic acids and unsaturated sulfonamides, respectively, leading to an averaged enantiomeric ratio (er) of 92:8. Notably, this protocol provides for the first time an asymmetric, catalytic entryway to pharmaceutically relevant 3-pyrroline motifs, which was used as a platform to access a 3,4-dihydroxyproline derivative in only seven steps with a 92:8 er.
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| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | ACS Catalysis | ||||
| Verlag: | AMER CHEMICAL SOC | ||||
|---|---|---|---|---|---|
| Ort der Veröffentlichung: | WASHINGTON | ||||
| Band: | 13 | ||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 24 | ||||
| Seitenbereich: | S. 16240-16248 | ||||
| Datum | 2023 | ||||
| Institutionen | Chemie und Pharmazie > Institut für Organische Chemie | ||||
| Projekte |
Gefördert von:
Europäische Kommission (EU)
(803426)
| ||||
| Identifikationsnummer |
| ||||
| Stichwörter / Keywords | ENANTIOSELECTIVE SYNTHESIS; PHOTOREDOX CATALYSIS; AMINO-ACID; ABSOLUTE-CONFIGURATION; PHOSPHORUS LIGANDS; DUAL-CATALYSIS; HECK REACTION; OXYGEN; ELECTROPHILES; ALKYLATION; enantioselectivity; photoredoxcatalysis; chiralselenium-pi-acids; alkenolides; 3-pyrrolines; 1,1 '-spirobiindane | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 540 Chemie | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-555889 | ||||
| Dokumenten-ID | 55588 |
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