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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 and Breder, Alexander
(2023)
Asymmetric Photoaerobic Lactonization and Aza-Wacker Cyclization of Alkenes Enabled by Ternary Selenium–Sulfur Multicatalysis.
ACS Catalysis 13 (24), pp. 16240-16248.
Date of publication of this fulltext: 23 Feb 2024 15:37
Article
DOI to cite this document: 10.5283/epub.55588
Abstract
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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| Item type | Article | ||||
| Journal or Publication Title | ACS Catalysis | ||||
| Publisher: | AMER CHEMICAL SOC | ||||
|---|---|---|---|---|---|
| Place of Publication: | WASHINGTON | ||||
| Volume: | 13 | ||||
| Number of Issue or Book Chapter: | 24 | ||||
| Page Range: | pp. 16240-16248 | ||||
| Date | 2023 | ||||
| Institutions | Chemistry and Pharmacy > Institut für Organische Chemie | ||||
| Projects |
Funded by:
Europäische Kommission (EU)
(803426)
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| Identification Number |
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| 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 Decimal Classification | 500 Science > 540 Chemistry & allied sciences | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-555889 | ||||
| Item ID | 55588 |
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