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Lei, Tao ; Graf, Sebastian ; Schöll, Christopher ; Krätzschmar, Felix ; Gregori, Bernhard ; Appleson, Theresa ; Breder, Alexander

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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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftACS Catalysis
Verlag:AMER CHEMICAL SOC
Ort der Veröffentlichung:WASHINGTON
Band:13
Nummer des Zeitschriftenheftes oder des Kapitels:24
Seitenbereich:S. 16240-16248
Datum2023
InstitutionenChemie und Pharmazie > Institut für Organische Chemie
Projekte
Gefördert von: Europäische Kommission (EU) (803426)
Identifikationsnummer
WertTyp
10.1021/acscatal.3c04443DOI
Stichwörter / KeywordsENANTIOSELECTIVE 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-Klassifikation500 Naturwissenschaften und Mathematik > 540 Chemie
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-555889
Dokumenten-ID55588

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