scholarly journals Fragment Coupling and Formation of Quaternary Carbons by Visible-Light Photoredox Catalyzed Reaction of tert-Alkyl Hemioxalate Salts and Michael Acceptors

2017 ◽  
Vol 94 ◽  
pp. 167-183 ◽  
Author(s):  
Christopher Jamison
Keyword(s):  
Visible Light ◽  
Michael Acceptors ◽  
Quaternary Carbons

ChemInform Abstract: Visible-Light Photoredox Synthesis of Internal Alkynes Containing Quaternary Carbons.

ChemInform ◽  
2016 ◽  
Vol 47 (40) ◽  
Author(s):  
Chang Gao ◽  
Jingjing Li ◽  
Jipan Yu ◽  
Haijun Yang ◽  
Hua Fu
Keyword(s):  
Visible Light ◽  
Internal Alkynes ◽  
Quaternary Carbons

Anionic Cyclometallated platinum(II) Tetrazolato Complexes as Viable Photoredox Catalysts

2018 ◽  
Author(s):  
Anna Maria Ranieri ◽  
Liam Burt ◽  
Stefano Stagni ◽  
Stefano Zacchini ◽  
Brian Skelton ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Room Temperature ◽  
Functional Group ◽  
Photophysical Properties ◽  
General Structure ◽  
No Emission ◽  
Michael Acceptors ◽  
Catalyzed Reactions

The synthesis, characterization, photophysical and photocatalytic studies of anionic platinum(II) tetrazolato complexes, with the general structure [TBA][Pt(CNC)TzR], are reported, where CNC<sup>2-</sup>represents a doubly cyclometalated 2,4,6-triphenylpyridine, TzR<sup>- </sup>is an anionic 5-substituted tetrazolato ligand (with a variable R functional group) and TBA<sup>+ </sup>is the tetrabutylammonium countercation. The complexes were prepared by substitution of the DMSO ligand in [Pt(CNC)(DMSO)] with the corresponding tetrazolato ligand. No emission from the platinum(II) complexes was detected at room temperature in solution, but the photophysical properties could be assessed in the solid state, where all the complexes display emission bands attributed to aggregates. The platinum(II) complexes were found to facilitate a range of fundamental classes of visible-light-mediated photoredox-catalyzed reactions, including α‑amino C–H functionalization processes, such as Povarov-type reactions and the addition of α-amino C–H bonds across Michael acceptors, in addition to ATRA chemistry, and a hydrodeiodination. With the exception of the hydrodeiodination process, the best Pt(II) catalysts provided turnover numbers of 150–175 in each of these transformations.

Visible Light Photoredox Catalysis: Generation and Addition of N-Aryltetrahydroisoquinoline-Derived α-Amino Radicals to Michael Acceptors

2012 ◽  
Vol 14 (3) ◽  
pp. 672-675 ◽  
Author(s):  
Paul Kohls ◽  
Deepak Jadhav ◽  
Ganesh Pandey ◽  
Oliver Reiser
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Michael Acceptors

scholarly journals Silyl-mediated photoredox-catalyzed Giese reaction: addition of non-activated alkyl bromides

2018 ◽  
Vol 9 (32) ◽  
pp. 6639-6646 ◽  
Author(s):  
Abdellatif ElMarrouni ◽  
Casey B. Ritts ◽  
Jaume Balsells
Keyword(s):  
Visible Light ◽  
Hdac Inhibitor ◽  
Addition Reaction ◽  
Conjugate Addition ◽  
Photoredox Catalysis ◽  
Unsaturated Esters ◽  
Alkyl Bromides ◽  
Michael Acceptors

The development of a conjugate addition reaction of non-activated alkyl bromides to Michael acceptors under visible-light photoredox catalysis is disclosed. A diverse set of alkyl bromides was successfully added to α,β-unsaturated esters and amides. This transformation allowed access to a key intermediate of Vorinostat®, an HDAC inhibitor used to fight cancer and HIV.

Sign in / Sign up

Export Citation Format

Share Document