Direct C–F Bond Formation Using Photoredox Catalysis
摘要:
We have developed the first example of a photoredox catalytic method for the formation of carbon-fluorine (C-F) bonds. The mechanism has been studied using transient absorption spectroscopy and involves a key single-electron transfer from the (MLCT)-M-3 (triplet metal-to-ligand charge transfer) state of Ru(bpy)(3)(2+) to Selectfluor. Not only does this represent a new reaction for photoredox catalysis, but the mild reaction conditions and use of visible light also make it a practical improvement over previously developed UV-mediated decarboxylative fluorinations.
Continuous Heterogeneous Photocatalysis in Serial Micro-Batch Reactors
作者:Bartholomäus Pieber、Menny Shalom、Markus Antonietti、Peter H. Seeberger、Kerry Gilmore
DOI:10.1002/anie.201712568
日期:2018.7.26
leaching catalysts, and heterogeneous photocatalysts are commonly employed in batch processes but are ill‐suited for continuous‐flow chemistry. Heterogeneous catalysts for thermal reactions are typically used in packed‐bed reactors, which cannot be penetrated by light and thus are not suitable for photocatalytic reactions involving solids. We demonstrate that serial micro‐batch reactors (SMBRs) allow
Direct C–F Bond Formation Using Photoredox Catalysis
作者:Montserrat Rueda-Becerril、Olivier Mahé、Myriam Drouin、Marek B. Majewski、Julian G. West、Michael O. Wolf、Glenn M. Sammis、Jean-François Paquin
DOI:10.1021/ja412083f
日期:2014.2.12
We have developed the first example of a photoredox catalytic method for the formation of carbon-fluorine (C-F) bonds. The mechanism has been studied using transient absorption spectroscopy and involves a key single-electron transfer from the (MLCT)-M-3 (triplet metal-to-ligand charge transfer) state of Ru(bpy)(3)(2+) to Selectfluor. Not only does this represent a new reaction for photoredox catalysis, but the mild reaction conditions and use of visible light also make it a practical improvement over previously developed UV-mediated decarboxylative fluorinations.