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Intermolecular Aza-Wacker Coupling of Alkenes with Azoles by Photo-Aerobic Selenium-π-Acid Multicatalysis
Lei, Tao, Appleson, Theresa and Breder, Alexander
(2024)
Intermolecular Aza-Wacker Coupling of Alkenes with Azoles by Photo-Aerobic Selenium-π-Acid Multicatalysis.
ACS Catalysis 14 (12), pp. 9586-9593.
Date of publication of this fulltext: 08 Jul 2024 14:42
Article
DOI to cite this document: 10.5283/epub.58627
Abstract
Herein, the intermolecular, photoaerobic aza-Wacker coupling of azoles with alkenes by means of dual and ternary selenium-π-acid multicatalysis is presented. The title method permits an expedited avenue toward a broad scope of N-allylated azoles and representative azinones under mild conditions with broad functional group tolerance, as is showcased in more than 60 examples including late-stage ...
Herein, the intermolecular, photoaerobic aza-Wacker coupling of azoles with alkenes by means of dual and ternary selenium-π-acid multicatalysis is presented. The title method permits an expedited avenue toward a broad scope of N-allylated azoles and representative azinones under mild conditions with broad functional group tolerance, as is showcased in more than 60 examples including late-stage drug derivatizations. From a regiochemical perspective, the protocol is complementary to cognate photoredox catalytic olefin aminations, as they typically proceed through either allylic hydrogen atom abstraction or single electron oxidation of the alkene substrate. These methods predominantly result in C–N bond formations at the allylic periphery of the alkene or the less substituted position of the former π-bond (i.e., anti-Markovnikov selectivity). The current process, however, operates through a radical-polar crossover mechanism, which solely affects the selenium catalyst, thus allowing the alkene to be converted strictly through an ionic two-electron transfer regime under Markovnikov control. In addition, it is shown that the corresponding N-vinyl azoles can also be accessed by sequential or one-pot treatment of the allylic azoles with base, thus emphasizing the exquisite utility of this method.
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| Item type | Article | ||||
| Journal or Publication Title | ACS Catalysis | ||||
| Publisher: | American Chemical Society (ACS) | ||||
|---|---|---|---|---|---|
| Volume: | 14 | ||||
| Number of Issue or Book Chapter: | 12 | ||||
| Page Range: | pp. 9586-9593 | ||||
| Date | 10 June 2024 | ||||
| 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 | aza-Wacker coupling azoles alkenes selenium-π-acid catalysis photoredox catalysis | ||||
| 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-586278 | ||||
| Item ID | 58627 |
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