Photocatalytic reduction of phenacyl halides by 9,10-dihydro-10-methylacridine: control between the reductive and oxidative quenching pathways of tris(bipyridine)ruthenium complex utilizing an acid catalysis

1990 ◽  
Vol 94 (2) ◽  
pp. 722-726 ◽  
Author(s):  
Shunichi. Fukuzumi ◽  
Seiji. Mochizuki ◽  
Toshio. Tanaka
Keyword(s):  
Acid Catalysis ◽  
Ruthenium Complex ◽  
Photocatalytic Reduction

Visible light assisted photocatalytic reduction of CO2 using a graphene oxide supported heteroleptic ruthenium complex

2015 ◽  
Vol 17 (3) ◽  
pp. 1605-1609 ◽  
Author(s):  
Pawan Kumar ◽  
Amit Bansiwal ◽  
Nitin Labhsetwar ◽  
Suman L. Jain
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Ruthenium Complex ◽  
Photocatalytic Reduction ◽  
Covalent Attachment ◽  
Microwave Technique ◽  
Reduction Of Co2

A new heteroleptic ruthenium complex containing 2-thiophenyl benzimidazole ligands was synthesized using a microwave technique and was immobilized to graphene oxide via covalent attachment.

In cellulo protein labelling with Ru-conjugate for luminescence imaging and bioorthogonal photocatalysis

2015 ◽  
Vol 51 (93) ◽  
pp. 16664-16666 ◽  
Author(s):  
Kalyan K. Sadhu ◽  
E. Lindberg ◽  
N. Winssinger
Keyword(s):  
Ruthenium Complex ◽  
Photocatalytic Reduction ◽  
Live Cells ◽  
Direct Visualization ◽  
Protein Labelling ◽  
Aryl Azide ◽  
Luminescence Imaging

Labelling of proteins with a luminescent ruthenium complex enables the direct visualization and photocatalytic reduction of aryl azide in live cells.

Cobalt/Lewis Acid Catalysis for Hydrocarbofunctionalization of Alkynes via Cooperative C–H Activation

2020 ◽  
Author(s):  
Chang-Sheng Wang ◽  
Sabrina Monaco ◽  
Anh Ngoc Thai ◽  
Md. Shafiqur Rahman ◽  
Chen Wang ◽  
...  
Keyword(s):  
Catalytic System ◽  
Lewis Acid ◽  
Hydrogen Transfer ◽  
Acid Catalysis ◽  
Rate Limiting Step ◽  
Site Selectivity ◽  
Set Up ◽  
Site Selective ◽  
First Time ◽  
Rate Limiting

A catalytic system comprised of a cobalt-diphosphine complex and a Lewis acid (LA) such as AlMe3 has been found to promote hydrocarbofunctionalization reactions of alkynes with Lewis basic and electron-deficient substrates such as formamides, pyridones, pyridines, and azole derivatives through site-selective C-H activation. Compared with known Ni/LA catalytic system for analogous transformations, the present catalytic system not only feature convenient set up using inexpensive and bench-stable precatalyst and ligand such as Co(acac)3 and 1,3-bis(diphenylphosphino)propane (dppp), but also display distinct site-selectivity toward C-H activation of pyridone and pyridine derivatives. In particular, a completely C4-selective alkenylation of pyridine has been achieved for the first time. Mechanistic stidies including DFT calculations on the Co/Al-catalyzed addition of formamide to alkyne have suggested that the reaction involves cleavage of the carbamoyl C-H bond as the rate-limiting step, which proceeds through a ligand-to-ligand hydrogen transfer (LLHT) mechanism leading to an alkyl(carbamoyl)cobalt intermediate.

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