Mittwoch, 10. Oktober 2018, 16:15 - 17:00 iCal

Guest talk - Prof. Louis Fensterbank, France

Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire

Recent Developments in Photoredox Catalysis and Dual Catalysis

Hörsaal 3 der Fakultät für Chemie
Währinger Straße 38, 1090 Wien

Vortrag

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Over the last decade, we have been involved in the implementation of organometallic catalysis to the development of more sustainable synthetic radical chemistry. Whether relying of the use of new organometallic iron or copper complexes, or photocatalytic systems, we have been able to devise efficient homolytic processes with relevant applications in organic synthesis. More recently, we have introduced hypervalent biscatecholato silicon compounds as versatile sources of alkyl radicals upon visible light photocatalysis. Using Ir(III) as catalytic photooxidant, or an organic dye, a series of alkyl radicals, including highly reactive primary ones can be generated and engaged in various intermolecular homolytic reactions. Based on cyclic voltammetry, Stern-Volmer studies and DFT calculations, a mechanism involving a single electron transfer from the silicate to the excited photocatalyst has been proposed. Finally, we have shown this oxidative photocatalyzed process can be efficiently merged with nickel-catalyzed Csp2-Csp3 cross-coupling reactions. Based on our developments in gold catalysis, our recent efforts in photoredox/gold dual catalysis will also be presented.

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Veranstalter

Fakultät für Chemie - Institut für Organische Chemie

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Kontakt

Lena Yadlapalli
Dekanat der Fakultät für Chemie
+43-1-4277-52012
lena.yadlapalli@univie.ac.at

Erstellt am Freitag, 20. Juli 2018, 11:28
Letzte Änderung am Montag, 23. Juli 2018, 10:06